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AU2017279586A1 - A type of ceramic composite toothed plate of jaw crushers and its preparation method - Google Patents

A type of ceramic composite toothed plate of jaw crushers and its preparation method Download PDF

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Publication number
AU2017279586A1
AU2017279586A1 AU2017279586A AU2017279586A AU2017279586A1 AU 2017279586 A1 AU2017279586 A1 AU 2017279586A1 AU 2017279586 A AU2017279586 A AU 2017279586A AU 2017279586 A AU2017279586 A AU 2017279586A AU 2017279586 A1 AU2017279586 A1 AU 2017279586A1
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AU
Australia
Prior art keywords
toothed plate
ceramic
jaw crusher
ceramic blocks
blocks
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Abandoned
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AU2017279586A
Inventor
Jian Ping SHI
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Handan Shiwei New Materials Co Ltd
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Handan Shiwei New Mat Co Ltd
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Publication of AU2017279586A1 publication Critical patent/AU2017279586A1/en
Priority to AU2021107585A priority Critical patent/AU2021107585A4/en
Abandoned legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C1/00Crushing or disintegrating by reciprocating members
    • B02C1/02Jaw crushers or pulverisers
    • B02C1/10Shape or construction of jaws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00Casting in, on, or around objects which form part of the product

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

Translation from Chinese The Abstract of Description The present invention discloses a type of ceramic composite toothed plate of jaw crusher which comprises a toothed plate body and ceramic blocks which are cast in on the tooth crests of the toothed plate body, and the size and the distribution density of the ceramic blocks decrease from both ends of the toothed plate towards the middle. It is metallurgical bonding between the toothed plate body and the ceramic blocks. The ceramic blocks are titanium carbide ceramic blocks, and the toothed plate body is of high manganese steel. The surface of the ceramic block is in the same plane as the surface of the tooth crest of the toothed plate body. The preparation process of the ceramic composite toothed plate of jaw crusher is Preparation of ceramic blocks Preparation of sand mould - Casting - Shakeout - Heat treatment. The present invention adopts the above-mentioned ceramic composite toothed plate of jaw crusher and its preparation method to solve the problem of the short service life of the toothed plate on jaw crushers. It has the advantages of impact resistance, crush resistance and wear resistance. CHIN SE <-> /ENG VALID T 4/1/2020 SIGNATrURE TRANSLATION DATE: & / CERTIFIED TRANSLATOR Translation from Chinese Drawing of the Abstract D E E E D EL n 0 0 F 0H

Description

The present invention discloses a type of ceramic composite toothed plate of jaw crusher which comprises a toothed plate body and ceramic blocks which are cast in on the tooth crests of the toothed plate body, and the size and the distribution density of the ceramic blocks decrease from both ends of the toothed plate towards the middle. It is metallurgical bonding between the toothed plate body and the ceramic blocks. The ceramic blocks are titanium carbide ceramic blocks, and the toothed plate body is of high manganese steel. The surface of the ceramic block is in the same plane as the surface of the tooth crest of the toothed plate body. The preparation process of the ceramic composite toothed plate of jaw crusher is Preparation of ceramic blocks Preparation of sand mould - Casting - Shakeout - Heat treatment. The present invention adopts the above-mentioned ceramic composite toothed plate of jaw crusher and its preparation method to solve the problem of the short service life of the toothed plate on jaw crushers. It has the advantages of impact resistance, crush resistance and wear resistance.
Figure AU2017279586A1_D0001
CHENG GU CTN3EX7&B
CHINESE <-> ENGLISH
VALID TO 4/10/2020
Figure AU2017279586A1_D0002
TRANSLATION DATE:
CERTIFIED TRANSLATOR
Translation from Chinese
2017279586 07 Feb 2018
Drawing of the Abstract
Figure AU2017279586A1_D0003
Translation from Chinese
2017279586 07 Feb 2018
Descr i pt i on
A Type of Ceramic Composite Toothed Plate of Jaw Crusher and Its Preparation Method
Technical Field
The invention belongs to the technical field of jaw crushers and in particular deals with a type of ceramic composite toothed plate of jaw crusher and its preparation method.
Background Art
The toothed plate of a jaw crusher is divided into the fixed toothed plate and the movable toothed plate and is the main component of a jaw crusher. When the jaw crusher is running, the movable toothed plate engages compound pendulum motions, forming an angle with the fixed toothed plate to crush the stone and therefore becomes more prone to damage amongst a I I parts of the jaw crusher. Annual consumption of the plate is huge, and the downtime maintenance and replacement due to the wear of the toothed plate decrease the production efficiency of companies and bring huge economic losses to the companies. To improve the service life of the toothed plate of jaw crusher, the majority of researchers are committed to improving the wear resistance of the
Translation from Chinese
2017279586 07 Feb 2018 toothed plate, and the common method used to improve the wear resistance of the toothed plate is to optimize the shape of the plate and rack. However, whether it is a traditional V shaped rack or a modified rack of other shapes, it is always done by casting high manganese steel in a preformed sand mould cavity. As the high manganese steel material can only work-harden on its surface under larger impact load and that surface will become poor in work-hardening and less wear-resistant when the impact load is smaller, changing the shape of the rack cannot fundamentally in<>rove the service life of the tooth plate of jaw crusher.
Content of the Invention
The purpose of the present invention is to provide a type of ceramic composite toothed plate of jaw crusher and its preparation method to solve the problem of the short service life of the toothed plate of jaw crusher.
To achieve the above goal, the present invention provides a type of ceramic composite toothed plate of jaw crusher, which comprises the toothed plate body and ceramic blocks; the said ceramic blocks are cast in on the tooth crests of the toothed plate body, and the size and the distribution density of the said ceramic blocks decrease from both ends of the said toothed plate towards the middle; the surface of the said ceramic block is in the same plane as the surface of the tooth crest of the said toothed plate body;
Translation from Chinese
2017279586 07 Feb 2018 it is metallurgical bonding between the said toothed plate body and the said ceramic blocks.
Preferably, the said ceramic blocks are titanium carbide ceramic blocks.
Preferably, the said toothed plate body is of high manganese steel
Preferably, the said ceramic block is a cuboid with the length being 30-60 mm, the width being 20-50 mm and the thickness being 10-25 mm.
Preferably, the said ceramic block is cylindrical with a diameter of 30-50 mm and a height of 10-25 mm.
Preferably, the said toothed plate body’s tooth shape is a trapezoid.
In addition to the above shapes and structures, the said toothed plate of jaw crusher further comprises a toothed plate of jaw crusher of any shape, structure and size; the said ceramic block includes ceramic blocks of any shape, structure and size in addition to the above shapes, structures and sizes.
The preparation method of the said ceramic composite toothed plate of jaw crusher is:
Step 1: preparing the ceramic blocks. Divide the ceramic into ceramic blocks of a desired shape and size, weld steel nails onto the surface of the ceramic blocks, and then clean the ceramic
Translation from Chinese
2017279586 07 Feb 2018 blocks and apply nickel supersaturated borax solution to the surface of the ceramic blocks with nickel: borax: water weight ratio being 1: 4: 5; dry the ceramic block for later use;
Step 2: preparing the sand mould. Bury the mould into the moulding flask, make the cavity, and after drying the ceramic blocks fix them to the bottom of the moulding flask with steel nails;
Step 3: casting. Before casting, the sand mould with the ceramic blocks fixed on it is heated to above 350 0 C with hot air, and the molten metal is poured into the heated sand mould at a pouring temperature of 1450-1550 0 C;
Step 4: Shake-out. When the moulding flask cools to below 300 °C after the completion of casting, dismantle the mould, shake out, and then remove the sticky sand from the casting surface and cut the running and feeding system and the nails on the ceramic blocks;
Step 5, heat treatment. Put the cast through water toughening process with the temperature being 1050 to 1100°C after cutting the running and feeding system and the naiIs. Keep the water temperature under 60 °C and the leaving water temperature below 30 °C.
The ceramic composite toothed plate of jaw crusher produced according to the above structure and preparation method has tensile strength Rm>735MPa, yield strength Ke>44UMPa,
Translation from Chinese
2017279586 07 Feb 2018 elongation after fracture A>15%, reduction of cross-section Z>15%, and impact toughness Aku>180 J/cm2.
Therefore, the present invention adopting the above-mentioned ceramic composite toothed plate of jaw crusher and its preparation method can solve the problem of the short service life of the toothed plates on the jaw crushers and has the advantages of impact resistance, crush resistance and wear resistance. Embedding the high manganese steel toothed plate with ceramic materials of high hardness and good wear resistance can greatly improve the hardness and wear resistance of the jaw crusher toothed plate, thereby enhancing its service life.
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings and the embodiment.
Description of the Drawings
Figure 1 is the toothed plate structure diagram of an embodiment of the present invention: the ceramic composite toothed plate of jaw crusher and its preparation method;
Figure 2 is the cross-sectional diagram of the toothed plate of an embodiment of the present invention: the ceramic composite toothed plate of jaw crusher and its preparation method;
io
Translation from Chinese
2017279586 07 Feb 2018
Figure 3 is a metallurgical bonding interface metallography of a titanium carbide ceramic block and a high manganese steel metal substrate in a jaw crusher toothed plate prepared using the method said in the present invention: the ceramic composite toothed plate of jaw crusher and its preparation method;
Drawing reference signs
1, toothed plate body; 2, ceramic blocks.
Deta iIed ImpIementati on
Embod i ment
Figure 1 is the structure diagram of the present invention: the ceramic composite toothed plate of jaw crusher; Figure 2 is the cross-sectional diagram of the present invention: the ceramic composite toothed plate of jaw crusher; As shown in Figure 1 and Figure 2, a type of ceramic composite toothed plate of jaw crusher comprises toothed plate body 1 and ceramic blocks 2 and ceramic blocks 2 are cast in on the crests of the trapezoid teeth of the toothed plate body 1, The surface of the ceramic block 2 is in the same plane as the surface of the crest of the trapezoid tooth of the toothed plate body 1. It is metallurgical bonding between the toothed plate body 1 and the ceramic blocks 2. The ceramic blocks 2 are titanium carbide ceramic blocks, which are made via powder pressing and vacuum sintering. The toothed pi ate body 1 is of high
Translation from Chinese
2017279586 07 Feb 2018 manganese steel. The ceramic block 2 is a cuboid with the length being 30-60 mm, the width being 20-50 mm and the thickness being 10-25 mm or a cylinder with a diameter of 30-50 mm and a height of 10-25 mm. The size of the ceramic block 2, the depth it is embedded in the toothed plate body 1 and the distribution density of the ceramic blocks are dependent on the wear of each part of the toothed plate body 1. The ceramic blocks on both ends where severe wear occurs should be larger in size, deeper in terms of embedding depth and denser in distribution density, while the ceramic blocks in less worn areas should be smaller in size, less deep in terms of embedding depth and sparser in distribution density. This can ensure the wear resistance of the toothed plate, and reduce the volume of the ceramic material and its cost.
The method for sand mould casting of the said the ceramic composite toothed plate of jaw crusher comprises:
Step 1, prepare the ceramic blocks 2. The ceramic blocks 2 are titanium carbide ceramic blocks, which are made via powder pressing and vacuum sintering. Then shape the ceramic blocks 2 into cuboids with the length being 30-60 mm, the width being 20-50 mm and the thickness being 10-25 mm or cylinders with a diameter of 30 50 mm and a height of 10-25 mm. Weld steel nails onto the length x width plane or the bottom surface of the cylinder of the ceramic block 2 with stainless steel solder wire_ Polish and clean the ceramic blocks 2. Apply nickel supersaturated borax solution
Translation From Chinese
2017279586 07 Feb 2018 to the surface of the ceramic blocks 2 with nickel: borax: water weight ratio being 1: 4: 5. The addition of nickel powder to the borax can improve the wettability between the molten metal and the ceramic blocks and increase the fluidity of the molten metal on the ceramic blocks. In this way, a good metallurgical bonding surface can be formed between the toothed plate body 1 and the ceramic blocks 2, so as to avoid the formation of slag inclusions and pores. Dry the ceramic block 2 for later use.
Step 2: preparing the sand mould. Bury the mould into the moulding flask, make the cavity, and insert the dried ceramic blocks 2 into the moulding sand at the bottom of the cavity via the steel nails welded on them. This is to fix the ceramic blocks 2 to prevent the ceramic blocks 2 from being displaced during the casting process. Be careful not to damage the moulded cavity when inserting the nails. The positions where the ceramic blocks 2 are inserted correspond to the positions of the tooth crests on the toothed plate cast. Apply high-temperature coating in the cavity, and place the cavity in the furnace to dry for later use.
Step 3, Casting. Carry out the proportioning smelting according to the specific composition of the toothed plate body 1. Before casting, the sand mould with the ceramic blocks 2 fixed on it is heated to above 350 ° C with hot air, and then assemble the mould. The molten metal is poured into the heated cavity to complete the casting. The pouring temperature of the molten metal should be
Translation from Chinese
2017279586 07 Feb 2018 maintained between 1450 to 1550 ° C. Heating the sand mould with hot air before casting can eliminate the moisture in the cavity, reduce the temperature difference between the molten metal and the ceramic blocks 2, and decrease the condensation speed of the molten metal at the interface of the ceramic blocks 2. Therefore, when the high-temperature metal liquid flows into the cavity and contacts with the heated ceramic blocks 2, the interface does not generate cold shut defects. The ceramic blocks 2 absorb heat from the high-temperature liquid metal to make the ceramic blocks 2 molten at the interface. The hard particles and the binder phase molecules in the surface layer of the ceramic blocks 2 interdiffuse with the high-temperature liquid metal molecules and after cooling, a metallurgical bonding layer is formed between the toothed plate body 1 and the ceramic blocks 2. The metallurgical bonding layer ensures the bonding strength between the toothed plate body 1 and the ceramic blocks 2.
Step 4, Shake-out. When the moulding flask cools to below 300 °C after the completion of casting, dismantle the mould and shake out, obtain the toothed plate, and then cut the running and feeding system and steel nails on the ceramic blocks 2. Remove the sticky sand from the surface of the toothed plate, and polish the surface of the toothed plate smooth.
Step 5, heat treatment. Put the polished toothed plate into the heating furnace and heat it to 1050-1100°C. Incubate it for 2 to 3
Translation from Chinese
2017279586 07 Feb 2018 hours and then take out the toothed plate and put it into the water quickly. The water temperature should remain at no more than 60 °C. When the temperature of the toothed plate drops to below 30 °C, take the toothed plate out from the water and complete the quenching.
In addition to the shape and structure of the toothed plate of jaw crusher as described in the above embodiment, a toothed plate of jaw crusher of any shape, structure and size is also included. In addition to the above shape, structure and size, the ceramic block includes ceramic blocks of any shape, structure and size.
The ceramic composite toothed plate of jaw crusher prepared using the above structure and preparation method of the ceramic composite toothed plate of jaw crusher and its preparation method has tensile strength Rm^735MPa, yield strength Re>440MPa, elongation after fracture A>15%, reduction of cross section Z>15%, and impact toughness Aku>180J/cm2.
Figure 3 is a metallurgical bonding interface metallography of the ceramic block and the high manganese steel metal substrate in a jaw crusher toothed plate prepared using the method said in the present, invention. As shown in Figure 3, the interface between the titanium carbide ceramic and the high manganese steel metal substrate is a metallurgical bonding surface, and the metallurgical bonding surface is good with no defects such as siag inclusion and pores.
Translation from Chinese
2017279586 07 Feb 2018
Therefore, the present invention adopts the structure of the above-mentioned ceramic composite toothed plate jaw crusher and has the high manganese steel metal substrate inlaid with the ceramic material of high hardness and good wear resistance, which can greatly increase the hardness and wear resistance of the toothed plate of the jaw crusher, thereby increasing its service life. The toothed plate of jaw crusher prepared using the above preparation method forms good metallurgical bonding surface between the ceramic blocks and the metal substrate with no defects such as slag inclusion and pores. The toothed plate of jaw crusher prepared using the present invention of the Ceramic Composite Toothed Plate of Jaw Crusher and Its Preparation Method has the advantages of impact resistance, crush resistance, wear resistance and long service I ife.
The above is a specific embodiment of the present invention, but the protection scope of the present invention should not be limited thereto. Any variation or replacement that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention shall fall within the protection scope of the present invention. Iherefore, the protection scope of the present invention should be subject to the protection scope defined in the claims.
Translation from Chinese
2017279586 07 Feb 2018

Claims (8)

  1. The Claims
    1. The features of a type of ceramic composite toothed plate of jaw crusher are: a toothed plate body and ceramic blocks are included; the said ceramic blocks are cast in on the tooth crests of the toothed plate body, and the size and the distribution density of the said ceramic blocks decrease from both ends of the said toothed plate towards the middle; the surface of the said ceramic block is in the same plane as the surface of the tooth crest of the said toothed plate body; it is metallurgical bonding between the said toothed plate body and the said ceramic blocks.
  2. 2. According to Claim 1, wherein a type of ceramic composite toothed plate of jaw crusher is characterized in that: The said ceramic blocks are titanium carbide ceramic blocks.
  3. 3. According to Claim 2, wherein a type of ceramic composite toothed plate of jaw crusher is characterized in that: The said toothed plate body is of high manganese steel.
  4. 4. According to Claim 3, wherein a type of ceramic composite toothed plate of jaw crusher is characterized in that: The said ceramic block is a cuboid with the length being 30-60 mm, the width being 2C-50 mm and the thickness being 1025 mm.
  5. 5. According to Claim 3, wherein a type of ceramic composite toothed plate of jaw crusher is characterized in that: The said
    Translation from Chinese
    2017279586 07 Feb 2018 ceramic block is cylindrical with a diameter of 30-50 mm and a he i ght of 10-25 mm.
  6. 6. According to Claim 4 or Claim 5, wherein a type of ceramic composite toothed plate of jaw crusher is characterized in that: The said toothed plate body’s tooth shape is a trapezoid.
  7. 7. According to Claim 1 to 6, wherein a type of ceramic composite toothed plate of jaw crusher is characterized in that: In addition to the above shapes and structures, the said toothed plate of jaw crusher further comprises a toothed plate of jaw crusher of any shape, structure and size; the said ceramic block includes ceramic blocks of any shape, structure and size in addition to the above shapes, structures and sizes.
  8. 8. A preparation method of the ceramic composite toothed plate of jaw crusher according to Claims 1 to 7 is characterized in that:
    Step 1: preparing the ceramic blocks. Divide the ceramic into ceramic blocks of a desired shape and size, weld steei nails onto the surface of the ceramic blocks, and then clean the ceramic blocks and apply nickel supersaturated borax solution to the surface of the ceramic blocks with nickel: borax: water weight ratio being 1: 4: 5; dry the ceramic blocks for later use;
    Step 2: preparing the sand mould. Bury the mould into the moulding flask, make the cavity, and after drying the ceramic blocks fix them to the bottom of the moulding flask with steel nails;
    Translation from Chinese
    2017279586 07 Feb 2018
    Step 3: casting. Before casting, the sand mould with the ceramic blocks fixed on it is heated to above 350 ° C with hot air, and the molten metal is poured into the heated sand mould at a pouring temperature of 1450-1550 ° C;
    Step 4: Shake-out. When the moulding flask cools to below 300 3C after the completion of casting, dismantle the mould, shake out, and then remove the sticky sand from the casting surface and cut the running and feeding system and the nails on the ceramic blocks;
    Step 5, heat treatment. Put the cast through water toughening process with the temperature being 1050 to 1100°C after cutting the running and feeding system and the nai Is. Keep the water temperature to no more than 60 °C and the leaving water temperature no more than 30 °C.
    Step 8, a preparation method of the ceramic composite toothed plate of jaw crusher according to Claim 7 is characterized in that: the ceramic composite toothed plate of jaw crusher post preparation has tensile strength Rm>735MPa, yield strength Re>440MPa, elongation after fracture A>15%, reduction of crosssection Z>15%, and impact toughness Aku>180J/cm.
    1/2
    Translation from Chinese
    2017279586 07 Feb 2018
    Figure 1
    2/2
    Translation from Chinese
    2017279586 07 Feb 2018 sU:.·%. '
    Figure 3
    CHENG GU lHn - CPN3EX7SB
    CHINESE <-> ENGLISH VALID TO 4/10/2020
    TRANSLATION DATE:
    CERTIFIED TRANSLATOR
    IS
AU2017279586A 2016-12-16 2017-12-18 A type of ceramic composite toothed plate of jaw crushers and its preparation method Abandoned AU2017279586A1 (en)

Priority Applications (1)

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AU2021107585A AU2021107585A4 (en) 2016-12-16 2021-10-19 Toothed plate for a Jaw Crusher

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201611164889.2A CN108201911B (en) 2016-12-16 2016-12-16 A preparation method of ceramic composite jaw crusher tooth plate
CN201611164889.2 2016-12-16

Related Child Applications (1)

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Cited By (1)

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CN115445696A (en) * 2021-06-08 2022-12-09 资源联合有限责任公司 wear liner assembly

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CN110076296B (en) * 2019-04-24 2020-12-08 焦作市威尔瑞福工业技术有限公司 Novel composite toothed plate casting method of high-power high-throughput crusher
CN110660954A (en) * 2019-09-20 2020-01-07 江西优特汽车技术有限公司 Welding method for conductive connecting sheet of power battery module
CN110802231B (en) * 2019-11-07 2021-10-01 齐鲁理工学院 A method to improve tissue density in 3D printing in mechanical pressure correction
CN112156835B (en) * 2020-11-04 2024-08-20 河南明天机械有限公司 Double-acting jaw crusher
CN114472856B (en) * 2022-04-14 2022-06-28 唐山贵金甲科技有限公司 Roller tooth sleeve of steel slag treatment crushing roller press and production process

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CN101921961A (en) * 2010-04-06 2010-12-22 淮阴工学院 Jaw Crusher Tooth Plate Inlaid with Cemented Carbide Rod and Lost Foam Casting Method
CN204220193U (en) * 2014-09-25 2015-03-25 北京金煤创业进出口有限公司 Honeycomb ZTA Ceramic Composite potassium steel toothed plate structure
CN105780843B (en) * 2016-04-21 2018-05-18 河北顶立机械科技有限公司 A kind of compound castingin electric bucket tooth and preparation method thereof
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115445696A (en) * 2021-06-08 2022-12-09 资源联合有限责任公司 wear liner assembly
AU2021221726B2 (en) * 2021-06-08 2023-06-01 Resources Unity Enterprise Pty Ltd Wear liner assembly

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CN108201911B (en) 2019-10-18
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