CN107419076A - A kind of mould steel heat treatment process - Google Patents

A kind of mould steel heat treatment process Download PDF

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Publication number
CN107419076A
CN107419076A CN201710615574.3A CN201710615574A CN107419076A CN 107419076 A CN107419076 A CN 107419076A CN 201710615574 A CN201710615574 A CN 201710615574A CN 107419076 A CN107419076 A CN 107419076A
Authority
CN
China
Prior art keywords
temperature
workpiece
incubated
steel
taken
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.)
Pending
Application number
CN201710615574.3A
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Chinese (zh)
Inventor
崔书信
周连杰
丁伟
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.)
Fanchang County Huate Machinery Manufacturing Co Ltd
Original Assignee
Fanchang County Huate Machinery Manufacturing Co Ltd
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 Fanchang County Huate Machinery Manufacturing Co Ltd filed Critical Fanchang County Huate Machinery Manufacturing Co Ltd
Priority to CN201710615574.3A priority Critical patent/CN107419076A/en
Publication of CN107419076A publication Critical patent/CN107419076A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • C21D1/28Normalising
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • C21D1/32Soft annealing, e.g. spheroidising
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/04Hardening by cooling below 0 degrees Celsius

Abstract

The invention discloses a kind of mould steel heat treatment process, comprise the following steps:(1) normalizing;(2) spheroidizing;(3) quench;(4) it is tempered;(5) freezing processing;(6) Ageing Treatment;(7) it is incubated, grinds.Workpiece surface hardness after present invention process processing is high, anti-wear performance is good, precision is high.

Description

A kind of mould steel heat treatment process
Technical field
The present invention relates to mould steel handling process, specifically a kind of mould steel heat treatment process.
Background technology
Often problem appear to is that annealing speed is too fast in existing mould steel heat treatment process, cause the brittle property of mould steel It is relatively strong, after bearing is fabricated to, due to rotating for axial length phase, make what bearing undertaken to be more than only axial force, also Some radial load, the radial load are hit with bearing, and the situation that bearing has fracture in use for some time occurs. Again due in mould steel heat treatment process, only undergoing primary quenching and lonneal, make the intensity, hardness, wearability of mould steel It is relatively poor with anti-fatigue performance, therefore, it should existing mould steel heat treatment process is changed, further to improve mould Steel is in intensity, hardness, wearability and anti-fatigue performance.
The content of the invention
The invention provides a kind of mould steel heat treatment process, to solve above-mentioned technical problem.
A kind of mould steel heat treatment process, comprises the following steps:
(1) normalizing:Steel are heated to 900 DEG C~950 DEG C of temperature in stove, and 40~60min of insulation, is used after workpiece is diathermanous Oil cooling or water cooling, steel are taken out when being cooled to 500 DEG C;
(2) spheroidizing:By heat steel to 780~810 DEG C, 3~6h is incubated, then in 690~750 DEG C of temperature ranges More than inside holding 4h;
(3) quench:Workpiece after above-mentioned preheating is placed in medium temperature salt bath furnace, 18 are incubated at a temperature of 820~860 DEG C After~22min, workpiece is taken out, cools down in quench rapidly light diesel fuel or No. 10 machine oil, is taken when workpiece temperature is down to 200 DEG C Go out, rinsed well with water;
(4) it is tempered:Workpiece is heated to temperature as 150 DEG C~170 DEG C in stove, is incubated 4h;
(5) freezing processing:Workpiece after quenched processing is put into household freezer in time in 30min, -75 DEG C~- 2~4h is incubated at a temperature of 80 DEG C;
(6) Ageing Treatment:After workpiece corase grind after will be chilled, it is placed in oil oven incubator, in 110 DEG C~120 DEG C temperature After 35~36h of the lower insulation of degree, slow cooling is taken out;
(7) it is incubated, grinds:By after Ageing Treatment workpiece fine grinding after, place into oil oven incubator, 110 DEG C~ Grinding step is transferred to after being incubated 7.5~8h at a temperature of 120 DEG C.
Beneficial effects of the present invention:
This mould steel heat treatment process of the present invention, intensity, hardness, wearability and the anti-fatigue performance of mould steel Increase.
Embodiment
Embodiments of the invention are described in detail below, but what the present invention can be defined by the claims and cover Multitude of different ways is implemented.
Below by way of specific embodiment, the present invention will be described in detail.
The present invention comprises the following steps:
(1) normalizing:Steel are heated to 900 DEG C~950 DEG C of temperature in stove, and 40~60min of insulation, is used after workpiece is diathermanous Oil cooling or water cooling, steel are taken out when being cooled to 500 DEG C;
(2) spheroidizing:By heat steel to 780~810 DEG C, 3~6h is incubated, then in 690~750 DEG C of temperature ranges More than inside holding 4h;
(3) quench:Workpiece after above-mentioned preheating is placed in medium temperature salt bath furnace, 18 are incubated at a temperature of 820~860 DEG C After~22min, workpiece is taken out, cools down in quench rapidly light diesel fuel or No. 10 machine oil, is taken when workpiece temperature is down to 200 DEG C Go out, rinsed well with water;
(4) it is tempered:Workpiece is heated to temperature as 150 DEG C~170 DEG C in stove, is incubated 4h;
(5) freezing processing:Workpiece after quenched processing is put into household freezer in time in 30min, -75 DEG C~- 2~4h is incubated at a temperature of 80 DEG C;
(6) Ageing Treatment:After workpiece corase grind after will be chilled, it is placed in oil oven incubator, in 110 DEG C~120 DEG C temperature After 35~36h of the lower insulation of degree, slow cooling is taken out;
(7) it is incubated, grinds:By after Ageing Treatment workpiece fine grinding after, place into oil oven incubator, 110 DEG C~ Grinding step is transferred to after being incubated 7.5~8h at a temperature of 120 DEG C.
The embodiments of the present invention described above are not intended to limit the scope of the present invention, any in the present invention Spirit and principle within the modifications, equivalent substitutions and improvements made etc., should be included in the claim protection model of the present invention Within enclosing.

Claims (1)

1. a kind of mould steel heat treatment process, it is characterised in that comprise the following steps:
(1) normalizing:Steel are heated to 900 DEG C~950 DEG C of temperature in stove, 40~60min of insulation after workpiece is diathermanous, using oil cooling Or water cooling, take out steel when being cooled to 500 DEG C;
(2) spheroidizing:By heat steel to 780~810 DEG C, 3~6h is incubated, is then protected in 690~750 DEG C of temperature ranges Warm more than 4h;
(3) quench:Workpiece after above-mentioned preheating is placed in medium temperature salt bath furnace, at a temperature of 820~860 DEG C be incubated 18~ After 22min, workpiece is taken out, cools down in quench rapidly light diesel fuel or No. 10 machine oil, is taken out when workpiece temperature is down to 200 DEG C, Rinsed well with water;
(4) it is tempered:Workpiece is heated to temperature as 150 DEG C~170 DEG C in stove, is incubated 4h;
(5) freezing processing:Workpiece after quenched processing is put into household freezer in time in 30min, at -75 DEG C~-80 DEG C At a temperature of be incubated 2~4h;
(6) Ageing Treatment:After workpiece corase grind after will be chilled, it is placed in oil oven incubator, at a temperature of 110 DEG C~120 DEG C After being incubated 35~36h, slow cooling is taken out;
(7) it is incubated, grinds:After the workpiece fine grinding after Ageing Treatment, place into oil oven incubator, at 110 DEG C~120 DEG C At a temperature of be incubated 7.5~8h after be transferred to grinding step.
CN201710615574.3A 2017-07-26 2017-07-26 A kind of mould steel heat treatment process Pending CN107419076A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710615574.3A CN107419076A (en) 2017-07-26 2017-07-26 A kind of mould steel heat treatment process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710615574.3A CN107419076A (en) 2017-07-26 2017-07-26 A kind of mould steel heat treatment process

Publications (1)

Publication Number Publication Date
CN107419076A true CN107419076A (en) 2017-12-01

Family

ID=60431208

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710615574.3A Pending CN107419076A (en) 2017-07-26 2017-07-26 A kind of mould steel heat treatment process

Country Status (1)

Country Link
CN (1) CN107419076A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111733312A (en) * 2020-08-12 2020-10-02 燕山大学 Heat treatment process for improving comprehensive mechanical property of H13 steel
CN112481477A (en) * 2020-10-28 2021-03-12 江麓机电集团有限公司 Heat treatment method of 30CrMnSiA thin steel plate fine punching part

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103215427A (en) * 2013-05-03 2013-07-24 衡阳风顺车桥有限公司 Heat treatment process of gauge block made of bearing steel
CN104328250A (en) * 2014-11-27 2015-02-04 王俐帧 Heat treatment process of bearing steel
CN104372148A (en) * 2014-11-06 2015-02-25 无锡市百顺机械厂 Heat treatment process of bearing steel
CN105671296A (en) * 2014-11-19 2016-06-15 重庆江东摩托车配件有限公司 Heat treatment process for GCr15 bearing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103215427A (en) * 2013-05-03 2013-07-24 衡阳风顺车桥有限公司 Heat treatment process of gauge block made of bearing steel
CN104372148A (en) * 2014-11-06 2015-02-25 无锡市百顺机械厂 Heat treatment process of bearing steel
CN105671296A (en) * 2014-11-19 2016-06-15 重庆江东摩托车配件有限公司 Heat treatment process for GCr15 bearing
CN104328250A (en) * 2014-11-27 2015-02-04 王俐帧 Heat treatment process of bearing steel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111733312A (en) * 2020-08-12 2020-10-02 燕山大学 Heat treatment process for improving comprehensive mechanical property of H13 steel
CN111733312B (en) * 2020-08-12 2021-06-22 燕山大学 Heat treatment process for improving comprehensive mechanical property of H13 steel
CN112481477A (en) * 2020-10-28 2021-03-12 江麓机电集团有限公司 Heat treatment method of 30CrMnSiA thin steel plate fine punching part

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Application publication date: 20171201