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WO2018103082A1 - Alliage d'acier traité thermiquement - Google Patents

Alliage d'acier traité thermiquement Download PDF

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Publication number
WO2018103082A1
WO2018103082A1 PCT/CN2016/109256 CN2016109256W WO2018103082A1 WO 2018103082 A1 WO2018103082 A1 WO 2018103082A1 CN 2016109256 W CN2016109256 W CN 2016109256W WO 2018103082 A1 WO2018103082 A1 WO 2018103082A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
heat
steel alloy
heating
raw materials
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/109256
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English (en)
Chinese (zh)
Inventor
孙瑞涛
李永栋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/CN2016/109256 priority Critical patent/WO2018103082A1/fr
Publication of WO2018103082A1 publication Critical patent/WO2018103082A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

Definitions

  • the invention relates to the technical field of steel materials, in particular to a heat-treated steel alloy.
  • the present invention proposes a heat-treated steel alloy.
  • a heat-treated steel alloy proposed by the present invention comprises the following weight percentages of raw materials:
  • weight percentages of raw materials are included:
  • weight percentages of raw materials are included:
  • the method for preparing the steel alloy comprises the following steps:
  • raw material C is weighed according to the percentage by weight: 1.2%-1.5%; Al: 0.12%-0.16%; Mo: 0.008%-0.018%; Mn: 0.5%-1.0%; B: 0.5%-1.2%; Ni: 0.1%-1.4%; Si: 3.55%-4.15%; Ti: 0.004%-0.01%; V: 0.1%-4.2%; W: 0.005%-0.01%; Cr: 0.5%-4.2%; Nb: 0.05% -0.15%; Re: 0.05% - 0.16%; Be: 0% - 0.24%; the balance is Fe; the above raw materials are sequentially added to the melting furnace, the melting temperature is 1000-1600 ° C, for 4-6 min, Obtaining a billet;
  • heat treatment of the billet, the heat treatment process parameters are: heating at a heating rate of 100 ° C / h to a temperature of 250-350 ° C, and then heating at a heating rate of 120 ° C / h to 1050-1150 ° C, holding time 3-5h , the transformation temperature is 550-650 ° C, the holding time is 10-15 min, to obtain a preform;
  • the preform in S2 is kept at a temperature of 200-300 ° C for 1-2 h, air-cooled to obtain a finished product, and the finished product is inspected and packaged into a warehouse.
  • the billet is subjected to heat treatment, and the process parameters of the heat treatment are: heating at a heating rate of 100 ° C / h to a temperature of 300 ° C, and then heating to a temperature of 120 ° C / h to 1100 ° C, after the holding time of 4 h
  • the conversion temperature was 600 ° C and the holding time was 12 min to obtain a preform.
  • the combination ratio of each element is optimized, and in combination with the selection of chemical elements, when the steel alloy is prepared, the billet is first obtained by smelting, and heat treatment is performed to optimize the heat treatment process.
  • Related parameters make the alloy structure performance enhanced, its strength and forgeability increased, and good durability.
  • the distribution ratio of the invention is reasonable, the preparation process is simple, and the prepared steel alloy has good comprehensive performance and durability. Suitable for promotion.
  • a heat-treated steel alloy proposed by the present invention comprises the following weight percentages of raw materials:
  • the preparation method comprises the following steps:
  • the raw materials are weighed according to the percentage by weight, and the raw materials are sequentially added to the melting furnace, and the melting temperature is 1000 ° C for 4 min to obtain a billet;
  • heat treatment of the billet the process parameters of the heat treatment are: heating at a heating rate of 100 ° C / h to a temperature of 250 ° C, and then heating to a temperature of 120 ° C / h to 1050 ° C, holding time of 3 h, the transition temperature is 550 ° C , the holding time is 10min, and the pre-product is obtained;
  • the preform in S2 is kept at a temperature of 200 ° C for 1 h, air-cooled to obtain a finished product, and the finished product is inspected and packaged into a warehouse.
  • a heat-treated steel alloy proposed by the present invention comprises the following weight percentages of raw materials:
  • the preparation method comprises the following steps:
  • the raw materials are weighed according to the percentage by weight, and the raw materials are sequentially added to the melting furnace, and the melting temperature is 1100 ° C for 4.5 min to obtain a billet;
  • heat treatment of the billet the process parameters of the heat treatment are: heating at a heating rate of 100 ° C / h to a temperature of 275 ° C, and then heating to a temperature of 120 ° C / h to 1075 ° C, holding time of 3.5 h, the transition temperature is 575 °C, holding time 11min, to obtain the preform;
  • the preform in S2 is kept at a temperature of 225 ° C for 1.2 h, and air-cooled to obtain The finished product is packed into the warehouse.
  • a heat-treated steel alloy proposed by the present invention comprises the following weight percentages of raw materials:
  • the preparation method comprises the following steps:
  • the raw materials are weighed according to the percentage by weight, and the raw materials are sequentially added to the melting furnace, and the melting temperature is 1300 ° C for 5 min to obtain a billet;
  • heat treatment of the billet the process parameters of the heat treatment are: heating at a heating rate of 100 ° C / h to a temperature of 300 ° C, and then heating to a temperature of 120 ° C / h to 1100 ° C, after the holding time of 4 h, the transition temperature is 600 ° C , the holding time is 14min, and the pre-product is obtained;
  • the preform in S2 is kept at a temperature of 250 ° C for 1.5 h, air-cooled to obtain a finished product, and the finished product is inspected and packaged into a warehouse.
  • a heat-treated steel alloy proposed by the present invention comprises the following weight percentages of raw materials:
  • the preparation method comprises the following steps:
  • the raw materials are weighed according to the percentage by weight, and the raw materials are sequentially added to the melting furnace, and the melting temperature is 1500 ° C for 5.5 min to obtain a billet;
  • heat treatment of the billet the process parameters of the heat treatment are: heating at a heating rate of 100 ° C / h to a temperature of 325 ° C, and then heating to a temperature of 120 ° C / h to 1125 ° C, holding time of 4.5 h, the transition temperature is 625 °C, holding time 14min, to obtain the preform;
  • the preform in S2 is kept at a temperature of 280 ° C for 1.8 h, air-cooled to obtain a finished product, and the finished product is inspected and packaged into a warehouse.
  • a heat-treated steel alloy proposed by the present invention comprises the following weight percentages of raw materials:
  • the preparation method comprises the following steps:
  • the raw materials are weighed according to the percentage by weight, and the raw materials are sequentially added to the melting furnace, and the melting temperature is 1600 ° C for 6 min to obtain a billet;
  • heat treatment of the billet, the heat treatment process parameters are: heating at a heating rate of 100 ° C / h to a temperature of 350 ° C, and then heating at a heating rate of 120 ° C / h to 1150 ° C, after 5 h holding time, the transition temperature is 650 ° C , the holding time is 15min, and the pre-product is obtained;
  • the preform in S2 is kept at a temperature of 300 ° C for 2 h, air-cooled to obtain a finished product, and the finished product is inspected and packaged into a warehouse.
  • the steel alloy of the present invention has excellent tensile strength and elongation, and has high overall performance.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

Cette invention concerne un alliage d'acier traité thermiquement, comprenant les matières premières suivantes en pourcentage en poids : C : de 1,2 à 1,5 % ; Al : de 0,12 à 0,16 % ; Mo : de 0,008 à 0,018 % ; Mn : de 0,5 à 1,0 % ; B : de 0,5 à 1,2 % ; Ni : de 0,1 à 1,4 % ; Si: de 3,55 à 4,15 % ; Ti : de 0,004 à 0,01 % ; V : de 0,1 à 4,2 % ; W : de 0,005 à 0,01 % ; Cr : de 0,5 à 4,2 % ; Nb : de 0,05 à 0,15 % ; Re : de 0,05 à 0,16 % ; Be : de 0 à 0,24 % ; le reste étant du Fe. Le procédé de préparation de l'alliage d'acier traité thermiquement comprend les étapes suivantes : S1, doser les matières premières en pourcentage en parties, et les ajouter en séquence dans un four de fusion à une température de fusion de 1000 à 1600 °C pendant 4 à 6 min pour obtenir une ébauche ; et S2, mettre le traitement thermique en œuvre sur l'ébauche, les paramètres technologiques du traitement thermique étant chauffage de l'ébauche jusqu'à une température de 250 à 350 °C à une vitesse de chauffage de 100 °C/h, puis son chauffage à une température de 1050 à 1150°C à une vitesse de chauffage de 120 °C/h.
PCT/CN2016/109256 2016-12-09 2016-12-09 Alliage d'acier traité thermiquement Ceased WO2018103082A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/109256 WO2018103082A1 (fr) 2016-12-09 2016-12-09 Alliage d'acier traité thermiquement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/109256 WO2018103082A1 (fr) 2016-12-09 2016-12-09 Alliage d'acier traité thermiquement

Publications (1)

Publication Number Publication Date
WO2018103082A1 true WO2018103082A1 (fr) 2018-06-14

Family

ID=62490535

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/109256 Ceased WO2018103082A1 (fr) 2016-12-09 2016-12-09 Alliage d'acier traité thermiquement

Country Status (1)

Country Link
WO (1) WO2018103082A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0646052A1 (fr) * 1992-06-19 1995-04-05 Commonwealth Scientific And Industrial Research Organisation Cylindres de fa onnage de metaux
CN102369304A (zh) * 2009-04-01 2012-03-07 罗瓦玛股份公司 具有出色的韧性和热导率的热加工工具钢
CN103276282A (zh) * 2013-06-28 2013-09-04 刘美福 一种输送矿物的防腐耐磨管道的制备方法
CN103290336A (zh) * 2013-06-09 2013-09-11 严建山 一种具有抗高温氧化防腐层的耐磨铸管的制备方法
CN106555130A (zh) * 2016-12-02 2017-04-05 机械科学研究总院青岛分院 一种热处理钢合金

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0646052A1 (fr) * 1992-06-19 1995-04-05 Commonwealth Scientific And Industrial Research Organisation Cylindres de fa onnage de metaux
CN102369304A (zh) * 2009-04-01 2012-03-07 罗瓦玛股份公司 具有出色的韧性和热导率的热加工工具钢
CN103290336A (zh) * 2013-06-09 2013-09-11 严建山 一种具有抗高温氧化防腐层的耐磨铸管的制备方法
CN103276282A (zh) * 2013-06-28 2013-09-04 刘美福 一种输送矿物的防腐耐磨管道的制备方法
CN106555130A (zh) * 2016-12-02 2017-04-05 机械科学研究总院青岛分院 一种热处理钢合金

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