KR200201919Y1 - Plating apparatus of molten zinc for small caliber steel pipe - Google Patents
Plating apparatus of molten zinc for small caliber steel pipe Download PDFInfo
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- KR200201919Y1 KR200201919Y1 KR2020000003961U KR20000003961U KR200201919Y1 KR 200201919 Y1 KR200201919 Y1 KR 200201919Y1 KR 2020000003961 U KR2020000003961 U KR 2020000003961U KR 20000003961 U KR20000003961 U KR 20000003961U KR 200201919 Y1 KR200201919 Y1 KR 200201919Y1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0222—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating in a reactive atmosphere, e.g. oxidising or reducing atmosphere
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0224—Two or more thermal pretreatments
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Coating With Molten Metal (AREA)
Abstract
본 고안은 소구경 강관의 용융아연 도금장치에 관한 것으로, 보다 상세하게는 냉각기의 콘덴서, 자동차의 브레이크 유압 라인 등에 사용되는 소구경 강관을 제조하는 방법에 관한 것으로, 조관 과정 중의 어닐링 공정을 통과한 강관의 온도를 450∼500℃로 냉각시켜 주는 쿨러(50)와; 아연을 용융 상태로 유지시켜 주는 챔버(30)와; 상기한 챔버(30)에 있는 용융 상태의 아연을 통과하는 관의 높이까지 액면을 높여 주는 블록 유니트(40)와; 상기한 챔버(30) 내에서 강관의 표면에 도금되는 아연(50)의 두께를 조절하기 위하여 가스를 분사해 주는 두께 조절장치(20)와; 상기한 두께 조절 장치(20)를 통과한 강관을 물을 이용하여 냉각시켜 주는 수냉장치(10)를 포함하여 이루어진다.The present invention relates to a hot-dip galvanizing apparatus for small-diameter steel pipe, and more particularly, to a method for manufacturing small-diameter steel pipe used for a condenser of a cooler, a brake hydraulic line of an automobile, and the like. A cooler 50 for cooling the temperature of the steel pipe to 450 to 500 ° C .; A chamber 30 for keeping zinc in a molten state; Block unit 40 for raising the liquid level to the height of the tube passing through the molten zinc in the chamber 30; A thickness adjusting device (20) for injecting gas to adjust the thickness of the zinc (50) plated on the surface of the steel pipe in the chamber (30); It comprises a water cooling device 10 for cooling the steel pipe passed through the thickness control device 20 using water.
Description
본 고안은 소구경 강관의 용융아연 도금장치에 관한 것으로, 보다 상세하게는 냉각기의 콘덴서, 자동차의 브레이크 유압 라인 등에 사용되는 소구경 강관을 제조함에 있어서 용융아연의 도금이 일괄적인 공정으로 이루어질 수 있도록 하는 소구경 강관의 용융아연 도금장치에 관한 것이다.The present invention relates to a hot-dip galvanizing apparatus for small-diameter steel pipe, and more particularly, in order to manufacture the small-diameter steel pipe used for the condenser of a cooler, the brake hydraulic line of an automobile, and the like, so that the plating of the molten zinc can be performed in a batch process. The present invention relates to a hot dip galvanizing apparatus for small diameter steel pipes.
일반적으로 강관(steel tube)을 제조하는 방법에는 사출 방식에 의한 생산 방법과, 강판을 튜브로 가공하는 방식이 있는데, 사출 방식에 의한 방법은 제조 단가가 높아서 강판을 이용한 가공 방법이 많이 이용되고 있다.In general, there are two methods for manufacturing steel tubes, the production method using an injection method and the method of processing a steel sheet into a tube. The method using the injection method has a high manufacturing cost, and thus, a processing method using a steel plate is widely used. .
후자 방식에 의한 강관 제조 방법은 강판을 튜브 형태로 변형하여 접촉면을 전기 저항 용접법으로 용접하여 가공하기 때문에 전봉관이라고도 한다.The latter method of manufacturing a steel pipe is also referred to as an electric sealing tube because the steel sheet is deformed into a tube shape and the contact surface is welded and processed.
이러한 전봉관 제조 방법은 그 구경이 작은 것에서부터 큰 것에 이르기까지 대부분의 강관 제조방법에 이용되고 있는 실정이다.This method of manufacturing the electric tube is used in most steel pipe manufacturing methods ranging from small to large diameter.
본 고안과 관련이 있는 소구경 강관 즉, ø4∼25mm 규격의 강관은 냉장고 등과 같은 냉각기의 콘덴서, 브레이크 유압 라인 등과 같이 내구성과 신뢰성이 요구되는 용도로 많이 사용되고 있다. 따라서, 높은 내구성과 신뢰성이 요구되는 소구경 강관은 그 제조 공정이 세밀하게 관리되어야하는 특성을 갖고 있다.Small-diameter steel pipes, that is, ø4 to 25 mm steel pipes related to the present invention, have been widely used for applications requiring durability and reliability, such as condensers and brake hydraulic lines of coolers such as refrigerators. Therefore, the small diameter steel pipe which requires high durability and reliability has the characteristic that the manufacturing process must be closely managed.
그런데, 종래의 소구경 강관 제조 공정은 소정의 폭을 갖는 강판을 강관 형태로 변형하여, 접촉부를 전기 저항 용접법으로 용접한 후에 냉각 처리하여, 구경을 규격치에 맞게 리듀싱(reducing) 처리하여 규격화한다.However, the conventional small-diameter steel pipe manufacturing process deforms a steel plate having a predetermined width into the shape of a steel pipe, welds the contact portion by electric resistance welding, then cools it, reduces the diameter to a standard value, and normalizes it. .
이렇게 규격화된 강관의 특성을 향상시키기 위하여 열처리 공정을 거쳐서, 기밀 시험, 도금 처리 과정을 각각 별도의 공정을 통하여 제품을 생산하고 있다.In order to improve the characteristics of the standardized steel pipe, through heat treatment process, the airtight test and the plating process are produced through separate processes.
이러한, 종래의 강관 제조공정은 강관 형성 공정과 강관의 표면을 도금 처리하는 공정이 별도의 공정으로 이루어져, 생산성이 떨어지는 것은 물론, 강관의 품질이 저하되는 문제점이 있었다.In the conventional steel pipe manufacturing process, the steel pipe forming process and the process of plating the surface of the steel pipe are made of separate processes, and the productivity of the steel pipe is degraded, as well as the quality of the steel pipe.
본 고안은 상기한 바와 같은 종래의 문제점을 해결하기 위한 것으로, 소구경 강관을 제조할 때 도금작업이 완전한 일련의 과정으로 처리되어 강관의 생산성을 향상시키고, 더불어 강관의 품질을 향상시키는 소구경 강관의 용융아연 도금장치를 제공하는데 그 목적이 있다.The present invention is to solve the conventional problems as described above, when manufacturing a small diameter steel pipe, the plating process is processed in a complete series process to improve the productivity of the steel pipe, and also to improve the quality of the steel pipe The purpose of the present invention is to provide a hot dip galvanizing apparatus.
본 고안은 상기한 목적을 달성하기 위하여, 조관된 강관의 표면에 아연을 도금하는 장치에 있어서, 조관 과정 중의 어닐링 공정을 통과한 강관의 온도를 450∼500℃ 로 냉각시켜 주는 쿨러와; 아연을 용융 상태로 유지시켜 주는 챔버와; 상기한 챔버에 있는 용융 상태의 아연을 통과하는 관의 높이까지 액면을 높여주는 블록 유니트와; 상기한 챔버 내에서 강관의 표면에 도금되는 아연의 두께를 조절하기 위하여 가스를 분사해 주는 두께 조절 장치와; 상기한 두께 조절 장치를 통과한 강관을 물을 이용하여 냉각시켜 주는 수냉 장치를 포함하여 이루어지는 특징이 있다.The present invention, in order to achieve the above object, in the apparatus for plating zinc on the surface of the steel pipe, the cooler for cooling the temperature of the steel pipe passed through the annealing process in the pipe process to 450 ~ 500 ℃; A chamber for maintaining zinc in a molten state; A block unit for raising the liquid level to the height of the tube passing through the molten zinc in the chamber; A thickness adjusting device for injecting gas to adjust the thickness of zinc plated on the surface of the steel pipe in the chamber; It characterized in that it comprises a water cooling device for cooling the steel pipe passing through the thickness control device using water.
도 1은 소구경 강관 제조 공정을 공정별로 나타낸 공정도,1 is a process chart showing a small diameter steel pipe manufacturing process by process,
도 2는 본 고안에 따른 소구경 강관 제조장치에서 용융아연 도금장치를 나타낸 평면도,Figure 2 is a plan view showing a hot-dip galvanizing apparatus in a small diameter steel pipe manufacturing apparatus according to the present invention,
도 3은 본 고안에 따른 소구경 강관 제조장치에서 용융아연 도금장치를 나타낸 측면도,Figure 3 is a side view showing a hot-dip galvanizing apparatus in a small diameter steel pipe manufacturing apparatus according to the present invention,
도 4는 본 고안에 따른 소구경 강관 제조장치에서 용융아연 도금장치의 챔버 및 블록 유니트를 나타낸 사시도.4 is a perspective view showing a chamber and a block unit of a hot dip galvanizing apparatus in a small diameter steel pipe manufacturing apparatus according to the present invention.
※ 도면의 주요 부분에 대한 부호 설명 ※※ Explanation of main parts of drawing ※
A:언코일링(uncoiling) B:버트 용접(butt welding)A: uncoiling B: butt welding
C:루핑(looping) D:포밍&용접(forming ＆ welding)C: looping D: forming & welding
E:쿨링(cooling) F:리듀싱(reducing)E: Cooling F: Reducing
G:열처리(heating) H:어닐링(annealing)G: heating H: annealing
I:아연용융도금 J:구리 도금(copper flashing)I: Zinc Hot dip plating J: Copper flashing
K:리코일링(recoiling) L:기밀 시험(leakage test)K: recoiling L: leak test
M:언코일링(uncoiling) N:직선 가공 공정(straitening)M: uncoiling N: Straightening process
O:배출(run out) P:기타 공정O: run out P: other processes
10:수냉 장치 20:두께 조절 장치10: water cooling device 20: thickness adjusting device
30:챔버 40:블럭 유니트30: chamber 40: block unit
50:쿨러 71:스크럽 조50: Cooler 71: Scrub nail
72:스트라이크 조 73:플레이팅 조72: Strike Joe 73: Plating Joe
81,82:스크럽 장치 83,88,89:린스 장치81,82: Scrub device 83,88,89: Rinse device
84:스트라이크 장치, 85∼87:플레이팅 장치84: strike apparatus, 85-87: plating apparatus
91∼96:펌프91 to 96: Pump
본 고안에 따른 소구경 강관 제조 방법에 대하여 본 고안의 일 실시예를 통하여 상세하게 설명한다.The small-diameter steel pipe manufacturing method according to the present invention will be described in detail through an embodiment of the present invention.
첨부한 도면, 도 1은 소구경 강관 제조 방법의 제조 공정을 공정별로 나타낸 공정도이고, 도 2는 본 고안에 따른 소구경 강관 제조장치에서 용융아연 도금장치를 나타낸 평면도이며, 도 3은 본 고안에 따른 소구경 강관 제조장치에서 용융아연 도금장치를 나타낸 측면도이다. 그리고, 도 4는 본 고안에 따른 소구경 강관 제조장치에서 용융아연 도금장치의 챔버 및 블록 유니트를 나타낸 사시도이다.The accompanying drawings, Figure 1 is a process diagram showing the manufacturing process of the small diameter steel pipe manufacturing method for each process, Figure 2 is a plan view showing a hot dip galvanizing apparatus in a small diameter steel pipe manufacturing apparatus according to the present invention, Figure 3 In accordance with the small-diameter steel pipe manufacturing apparatus according to the side view showing the hot-dip galvanizing apparatus. And, Figure 4 is a perspective view showing a chamber and a block unit of the hot-dip galvanizing apparatus in the small diameter steel pipe manufacturing apparatus according to the present invention.
강관을 제조하기 위하여 강판을 구입하여 필요한 크기로 절단하여 코일 형태로 코일링한다. 이렇게 코일링된 강판 코일을 언코일링하면서(A 공정, 언코일링 공정), 연속적으로 공급하기 위하여 연결부를 버트 용접 방법으로 연결하여 공급한다(B 공정, 버트 용접 공정).In order to manufacture the steel pipe, a steel sheet is purchased, cut into the required size, and coiled in the form of a coil. While coiling the coiled steel coil in this way (A process and uncoiling process), the connection part is connected and supplied by a butt welding method for continuous supply (B process, butt welding process).
공급되는 강판의 공급 속도를 일정하게 유지하기 위하여 루핑(LOOPING) 상태를 유지하면서 곧은 상태로 배출한다(C 공정, 루핑 공정), 이때, 하기한 용접 공정에서 용접 불량을 방지하기 위하여 강판에 묻어 있는 기름 등을 세척하여 제거한다.In order to maintain a constant supply speed of the steel sheet to be supplied, it is discharged in a straight state while maintaining a looping state (C process, roofing process). At this time, it is buried in the steel plate to prevent welding defects in the following welding process. Remove oil by washing.
곧은 상태로 공급되는 강판을 이용하여 관(TUBE) 형태로 조관하면서 이음부를 전기 저항 용접법으로 용접하여 관을 형성한다(D 공정, 포밍&용접 공정).The steel sheet supplied in a straight state is used to form a tube while the joint is welded by an electric resistance welding method while forming a tube (D process, forming & welding process).
상기한 포밍 및 용접 공정을 거친 관의 온도는 매우 높은 상태이기 때문에 적당한 온도로 냉각시킨다(E 공정, 쿨링 공정). 이때, 관의 비드(BEAD)부 즉, 용접 부위를 매끄럽게 절삭하여 하기한 용융 아연 도금 공정에서의 불량을 방지한다.Since the temperature of the tube which went through the forming and welding process mentioned above is very high, it cools to moderate temperature (E process, cooling process). At this time, the bead part of a pipe, ie, a welded part, is cut smoothly, and the defect in the following hot dip galvanizing process is prevented.
그리고, 최종적으로 생산하고자 하는 관의 직경 규격대로 관의 직경을 축소하여 배출한다(F 공정, 리듀싱 공정).Then, the diameter of the tube is finally reduced and discharged according to the diameter standard of the tube to be produced (F process, reducing process).
이렇게 최종적으로 관이 직경이 규격대로 정해져 배출된 관의 기계적 성질을 향상시키기 위하여 열처리 공정(G 공정)과 어닐링 공정(H 공정)을 거치게 된다. 이 열처리 공정은 유도 코일(INDUCTION COIL)을 이용하여 720∼760℃의 열로써 가열하고, 어닐링 공정은 다음 단계의 용융 아연 도금을 실행하기 위한 온도 조건 450∼500℃ 로 냉각하여 준다. 이때, 냉각을 위한 냉각대의 분위기 가스는 N290%, H210%의 DX 가스를 사용하여 관의 외부면이 산화되지 않고 백색 상태를 유지하도록 한다. 만약, 냉각대 내부에 산소량이 100ppm 이상 잔존하면 고온으로 가열된 관 표면을 검게 산화시켜 아연을 도금할 때 불량이 발생하는 원인이 된다. 따라서, 관을 열처리할 때 분위기 가스의 성분은 용융 아연 도금뿐만 아니라 동(銅, Cu)을 도금할 때에도 악영향을 끼치는 원인으로 작용하게 되는 것이다.In this way, the tube is finally determined according to the standard diameter and subjected to a heat treatment process (G process) and an annealing process (H process) in order to improve the mechanical properties of the discharged tube. This heat treatment process is heated by heat of 720 to 760 ° C using an induction coil, and the annealing process is cooled to a temperature condition of 450 to 500 ° C for performing hot dip galvanization of the next step. At this time, the atmosphere gas of the cooling zone for cooling is N 2 90%, H 2 10% DX gas so that the outer surface of the tube is not oxidized to maintain a white state. If the amount of oxygen remaining in the cooling zone is more than 100ppm, the surface of the tube heated at high temperature is oxidized black, which causes a defect in plating zinc. Therefore, when heat-treating the tube, the component of the atmosphere gas acts as a cause to adversely affect not only hot-dip galvanizing but also copper (Pu) plating.
다음 공정으로는 용융아연 도금공정으로써, 상기한 어닐링 공정에서 관의 온도를 450∼500℃로 유지하여 용융 상태의 아연을 표면에 도금한다(I 공정, 용융 아연 도금 공정). 이때, 아연을 도금하는 과정에서 도금하고자 하는 관을 도금조에 담그기 위하여 별도로 관을 절곡시키는 과정이 없이 직선 상태에서 직접 도금 처리한다. 이 과정은 아래에서 다시 설명하기로 한다.In the next step, a hot dip galvanizing step is performed, in which the temperature of the tube is maintained at 450 to 500 ° C. in the above annealing step to plate the zinc in the molten state on the surface (I step, hot dip galvanizing step). At this time, in order to immerse the tube to be plated in the zinc plating process in the plating bath, the plating process directly in a straight state without the process of bending the tube separately. This process will be described again below.
이렇게 도금 처리 공정이 끝난 관을 코일 형태로 감아서(K 공정, 리코일링 공정), 조관 상태를 검사하기 위하여 수조를 이용하여 관의 기밀성을 시험한다(L 공정, 기밀 시험).The tube after the plating process is wound in the form of a coil (K process, recoiling process), and the airtightness of the tube is tested by using a water tank to check the condition of the tube (L process, airtight test).
기밀 시험을 마친 코일 상태의 관을 직성 상태로 하기 위하여 다시 언코일링하여(M 공정, 언코일링 공정), 직선 가공 처리하여(N 공정, 직선 가공 공정), 적당한 길이로 절단하여 배출한다(O 공정, 배출 공정).The coiled tube after the airtight test has been uncoiled again (M process, uncoiled process), straightened (N process, straight processed process), and cut into a suitable length to discharge into a straight state. O process, discharge process).
이와같이 제조된 관을 이용하여 필요한 기타 공정을 처리하여 마무리한다(P 공정).The tube thus prepared is used to process and finish other necessary processes (P process).
상기한 여러 공정 중에서 본 고안에 해당하는 용융아연 도금장치에 대하여 보다 상세하게 설명하기로 한다.Of the various processes described above will be described in more detail with respect to the hot-dip galvanizing apparatus corresponding to the present invention.
용융아연 도금공정은 조관 공정을 연속적으로 유지하기 위하여, 아연을 용융 상태로 유지시켜 주는 챔버에 조관 중인 강관을 통과시키면서 통과 중인 강관의 높이보다 용융 아연의 액면이 높게 형성되도록 소정의 부피를 갖는 블록을 챔버 내에 투입하여 용융 아연의 액면 높이를 상승시켜 강관의 표면에 아연을 도금하고, 아연의 도금 두께를 조절하기 위하여 챔버를 통과한 강관의 표면에 소정의 가스를 분사하여 아연 도금 두께를 조절하고, 수냉 방식은 이용하여 냉각시키는 과정으로 이루어진다.In the hot dip galvanizing process, a block having a predetermined volume is formed so that the liquid level of molten zinc is formed higher than the height of the steel pipe passing while passing the steel pipe being piped to the chamber for maintaining zinc in the molten state in order to continuously maintain the pipe making process. To increase the liquid level of the molten zinc to plate the zinc on the surface of the steel pipe, and in order to control the plating thickness of the zinc by spraying a predetermined gas on the surface of the steel pipe passing through the chamber to adjust the zinc plating thickness In this case, the water-cooling method consists of cooling by using.
이러한 용융아연 도금을 위한 용융아연 도금장치는, 도 2∼4에 도시한 바와 같이, 전체 공정 중에서 어닐링 공정(H)에서 450∼500℃의 온도로 유지되어 배출되는 강관의 표면을 챔버(30)에 통과시켜 도금하는 것으로써, 그 구성은 어닐링 공정에서 강관의 온도를 450∼500℃ 로 냉각시켜 주는 쿨러(50)와; 아연을 용융 상태로 유지시켜 주는 챔버(30)와; 상기한 챔버(30)에 있는 용융 상태의 아연을 통과하는 관의 높이까지 액면을 높여 주는 블록 유니트(40)와; 상기한 챔버(30)내에서 강관의 표면에 도금되는 아연(50)의 두께를 조절하기 위하여 가스를 분사해주는 두께 조절 장치(20)와; 상기한 두께 조절 장치(20)를 통과한 강관을 물을 이용하여 냉각시켜 주는 수냉 장치(10)로 이루어져 다음과 같이 작용한다.In the hot dip galvanizing apparatus for hot dip galvanizing, as shown in FIGS. 2 to 4, the surface of the steel pipe which is maintained at a temperature of 450 to 500 ° C. in the annealing process (H) during the entire process is discharged from the chamber 30. By passing through and plating, the constitution comprises: a cooler 50 for cooling the temperature of the steel pipe to 450 to 500 ° C in the annealing process; A chamber 30 for keeping zinc in a molten state; Block unit 40 for raising the liquid level to the height of the tube passing through the molten zinc in the chamber 30; A thickness control device 20 for injecting gas to control the thickness of the zinc 50 plated on the surface of the steel pipe in the chamber 30; It consists of a water cooling device 10 for cooling the steel pipe passing through the thickness control device 20 using water as follows.
어닐링 공정(H)에서 쿨러(50)에 의하여 강관의 온도가 450∼500℃ 로 냉각되어 배출이 계속 진행되면, 아연을 용융 상태로 유지하기 위하여 열이 가해지는 챔버(30) 내의 아연은 용융 상태를 유지하고 있으며, 이 용융 상태인 아연의 액면 높이를 통과하는 관의 높이보다 높게 유지시켜 주는 블록 유니트(40)를 이용하여 아연의 액면 높이를 높여 준다.In the annealing process (H), when the temperature of the steel pipe is cooled to 450 to 500 ° C. by the cooler 50 and discharge is continued, the zinc in the chamber 30 to which the heat is applied to keep the zinc in a molten state is in a molten state. It is maintained, and the liquid level of zinc is raised by using a block unit 40 that maintains the molten state higher than the height of the pipe passing through the liquid level of zinc.
이렇게 액면의 높이가 높아진 용융 아연을 관이 통과하면서 관의 표면에 아연이 도금되며, 도금되는 아연의 두께를 조절해 주는 두께 조절 장치(20)는 소정의 가스를 분사하여, 분사되는 가스의 압력에 의하여 강관의 표면에 도금되는 아연의 두께를 조절하는 것이다.The zinc is plated on the surface of the tube while the tube passes through the molten zinc having a higher liquid level, and the thickness adjusting device 20 which controls the thickness of the zinc to be plated injects a predetermined gas, so that the pressure of the injected gas is reduced. By controlling the thickness of the zinc plated on the surface of the steel pipe.
이렇게 도금되는 강관은 수냉 장치(10)를 통과하게 되어 저온으로 냉각되어 배출되어 다음 단계의 기밀 시험 과정으로 이송된다.The steel pipe to be plated is passed through the water cooling device 10, cooled to a low temperature, discharged, and then transferred to the airtight test process of the next step.
이와 같은 용융아연의 도금과정(I)은 강관 제조 공정에 연속적으로 공정이 연결되어 아연을 도금하기 때문에 생산성을 향상시키는 중요한 요인으로 작용한다.The plating process (I) of the molten zinc is an important factor to improve the productivity because the process is connected to the steel pipe manufacturing process in order to plate the zinc.
지금까지 본 고안에 따른 바람직한 실시예를 들어 도시하고 설명하였으나, 본 고안은 상기한 실시예에 한정되지 아니하며, 본 고안의 정신을 벗어나지 않는 범위 내에서 본 고안이 속하는 기술 분야에서 통상의 지식을 갖는 자에 의해 다양한 변경과 수정이 가능할 것이다.Although the present invention has been illustrated and described with reference to preferred embodiments, the present invention is not limited to the above-described embodiments, and has a general knowledge in the technical field to which the present invention belongs without departing from the spirit of the present invention. Various changes and modifications may be made by the user.
상기한 바와 같이 이루어진 본 고안에 따른 소구경 강관의 용융아연 도금장치는 소구경 강관을 제조할 때 생산 공정을 완전한 일련의 과정으로 처리하여 강관을 생산하기 때문에 생산성이 크게 향상되고, 더불어 강관의 품질이 향상되는 효과를 제공한다.The hot-dip galvanizing apparatus of the small diameter steel pipe according to the present invention made as described above greatly improves the productivity because the steel pipe is produced by processing the production process as a complete series process when manufacturing the small diameter steel pipe, and the quality of the steel pipe This gives the effect of being improved.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2020000003961U KR200201919Y1 (en) | 1997-09-24 | 2000-02-15 | Plating apparatus of molten zinc for small caliber steel pipe |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970048588A KR19990026474A (en) | 1997-09-24 | 1997-09-24 | Small Diameter Steel Pipe Manufacturing Method |
| KR2020000003961U KR200201919Y1 (en) | 1997-09-24 | 2000-02-15 | Plating apparatus of molten zinc for small caliber steel pipe |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019970048588A Division KR19990026474A (en) | 1997-09-24 | 1997-09-24 | Small Diameter Steel Pipe Manufacturing Method |
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| KR20000009293U KR20000009293U (en) | 2000-05-25 |
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| KR1019970048588A Withdrawn KR19990026474A (en) | 1997-09-24 | 1997-09-24 | Small Diameter Steel Pipe Manufacturing Method |
| KR1020000007032A Expired - Fee Related KR100272430B1 (en) | 1997-09-24 | 2000-02-15 | Method of construction for small caliber steel pipe |
| KR2020000003961U Expired - Lifetime KR200201919Y1 (en) | 1997-09-24 | 2000-02-15 | Plating apparatus of molten zinc for small caliber steel pipe |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019970048588A Withdrawn KR19990026474A (en) | 1997-09-24 | 1997-09-24 | Small Diameter Steel Pipe Manufacturing Method |
| KR1020000007032A Expired - Fee Related KR100272430B1 (en) | 1997-09-24 | 2000-02-15 | Method of construction for small caliber steel pipe |
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| CN120575113B (en) * | 2025-08-02 | 2025-09-30 | 陕西友发钢管有限公司 | Hot dip galvanizing equipment for thin-walled square tubes |
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1997
- 1997-09-24 KR KR1019970048588A patent/KR19990026474A/en not_active Withdrawn
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2000
- 2000-02-15 KR KR1020000007032A patent/KR100272430B1/en not_active Expired - Fee Related
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| KR19990026474A (en) | 1999-04-15 |
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