CN1718774A - Deep cooling treatment method of high speed steel tool - Google Patents

Deep cooling treatment method of high speed steel tool Download PDF

Info

Publication number
CN1718774A
CN1718774A CN 200510046799 CN200510046799A CN1718774A CN 1718774 A CN1718774 A CN 1718774A CN 200510046799 CN200510046799 CN 200510046799 CN 200510046799 A CN200510046799 A CN 200510046799A CN 1718774 A CN1718774 A CN 1718774A
Authority
CN
China
Prior art keywords
deep cooling
cutter
sub
high speed
speed steel
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.)
Granted
Application number
CN 200510046799
Other languages
Chinese (zh)
Other versions
CN100390305C (en
Inventor
段春争
李士燕
王敏杰
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.)
Dalian Engineering Mould Research Institute Co Ltd
Original Assignee
Dalian University of Technology
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 Dalian University of Technology filed Critical Dalian University of Technology
Priority to CNB2005100467999A priority Critical patent/CN100390305C/en
Publication of CN1718774A publication Critical patent/CN1718774A/en
Application granted granted Critical
Publication of CN100390305C publication Critical patent/CN100390305C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

A deep cooling method for treating the cutting tool made of high-speed steel in order to elongate its service life includes such steps as quenching, tempering, precooling, deep cooling in liquefied N2 at -185--196 deg.C , holding the temp for a certain time calculated by an equation, recovering its temp to room temp and heating it in boiling water for 60 min. For the large cutting tool, said steps can be performed 2-3 times.

Description

A kind of deep cooling treatment method of high speed steel tool
Technical field
The present invention is the thermal treatment process technology field that belongs to metallic substance, relates to the thermal treatment of steel workpiece, specially refers to deep cooling treatment method of high speed steel tool.
Background technology
In the prior art, be used for the speedy steel cutting-tool effect preferably cryogenic treatment process be: 1 time+deep cooling+tempering of quenching+tempering 1 time, the soaking time of sub-zero treatment is that the net thickness or the effective diameter of workpiece multiply by 5~8 minutes/millimeter, and the sub-zero treatment mode adopts the direct immerseable of liquid method more.
The problem of speedy steel cutting-tool cryogenic treatment process existence at present is that times of tempering is more, and energy consumption is big.Cryogenic treatment process is not considered incubation period of sub-zero treatment phase transformation to make separating out of carbide insufficient, thereby can not improve the work-ing life of speedy steel cutting-tool more significantly to the calculating of deep cooling soaking time.In addition, directly the mode of immersing can cause the severe thermal of workpiece surface is impacted, and forms crizzle, influences the sub-zero treatment effect.
Summary of the invention
The purpose of this invention is to provide a kind of speedy steel cutting-tool cryogenic treatment process, solve the problem of the big and DeGrain of the power consumption that in the speedy steel cutting-tool sub-zero treatment, exists at present.
Technical scheme of the present invention is that speedy steel cutting-tool carries out quench treatment according to the specific phase critical point of steel grade, carries out a tempering after the quenching, carries out sub-zero treatment after the tempering, and liquid nitrogen temperature is-185~-196 ℃.Adopt liquid method to carry out sub-zero treatment, the cryogenic treatment process process is as follows:
1. before the deep cooling cutter is carried out precooling treatment.
2. the deep cooling of cutter insulation
Calculate the isothermal hold-time of cutter in liquid nitrogen with following formula (1):
T=I+KD (1)
In the formula T be the deep cooling hold-time (hour); I be incubation period (hour), be the constant relevant with material; K is the coefficient (minute/millimeter) relevant with the sectional dimension of cutter working portion, and the system of selection of COEFFICIENT K is as follows:
The cutter section thickness was got 15 minutes/millimeter less than 5 millimeters K; The cutter section thickness was got 20 minutes/millimeter greater than 5 millimeters K;
The cutter diameter of section was got 16 minutes/millimeter less than 5 millimeters K; The cutter diameter of section was got 22 minutes/millimeter greater than 5 millimeters K
D is the free area size (millimeter) of cutter working portion.
3. the stress-removal of cutter heating
After the sub-zero treatment cutter temperature recovery is arrived room temperature.Carry out one time then more than 1 hour, the unrelieved stress of eliminating after the sub-zero treatment is handled in 100 ℃ low-temperature heat.
Can carry out 2~3 sub-zero treatments to it by above-mentioned technology for complex-shaped or large-scale cutter.
The effect of cryogenic treatment process of the present invention and benefit are because of no longer carrying out tempering after sub-zero treatment, times of tempering is reduced to once, having saved the energy.Find by the transmission electron microscope observation among Fig. 1 and Fig. 2, with present cryogenic technology be twice of tempering and deep cooling soaking time be not counted in phase transformation incubation period technology relatively, the rapid steel workpiece after cryogenic technology of the present invention is handled is separated out the M of a large amount of nanoscales in martensite lath 6C or MC type carbide.Because of having taken into account phase transformation incubation period during the hold-time calculating sub-zero treatment, making carbide separate out quantity obviously increases, and is more evenly distributed.Find that by the sem observation among Fig. 3 and Fig. 4 with present cryogenic treatment process comparison, the impact fracture brittle crack quantity of the rapid steel workpiece after this art breading obviously reduces, dimple quantity increases.Experimental result shows that impelling strength improves 1 times, and wear resistance improves 1~2 times.Precooling treatment before the deep cooling has been eliminated the tiny crack that direct immerseable cryogenic technology produces, and makes the sub-zero treatment effect more stable.
Description of drawings
Accompanying drawing 1 is the transmission electron microscope details in a play not acted out on stage, but told through dialogues photo of the inner carbide precipitate distribution of W18Cr4V rapid steel workpiece after present cryogenic technology is handled.As seen, carbide particle quantity is few, and skewness among the figure.
Accompanying drawing 2 is handled the transmission electron microscope details in a play not acted out on stage, but told through dialogues photo of the distribution of the inner carbide precipitate of back W18Cr4V rapid steel workpiece for cryogenic technology of the present invention.As seen, carbide particle quantity obviously increases among the figure, and disperse distributes.
Accompanying drawing 3 is the stereoscan photograph that present cryogenic technology is handled back W18Cr4V rapid steel impact fracture.As seen, there is brittle crack among the figure.
Accompanying drawing 4 is handled the stereoscan photograph of back W18Cr4V rapid steel impact fracture for cryogenic technology of the present invention.As seen, brittle crack disappears among the figure, and dimple quantity increases.
Embodiment
Below in conjunction with technical scheme, be described in detail specific embodiments of the invention.
For W18Cr4V steel cutter, quenching temperature is 1280 ℃, and oil quenching carries out a tempering 1 hour after the quenching, and tempering temperature is 600 ℃, carries out sub-zero treatment after the tempering in-185~-196 ℃ liquid nitrogen.Adopt liquid method to carry out sub-zero treatment.The cryogenic treatment process process is as follows:
The precooling of cutter before step 1 deep cooling
Cutter is placed on the liquid level of liquid nitrogen and stopped 30 minutes, or 1/3 of cutter height is put into liquid nitrogen fast do not do stop and take out immediately, also can reach the precooling effect 2~3 times so repeatedly.
The deep cooling insulation of step 2 cutter
Cutter after the precooling is slowly put into liquid nitrogen, and by formula (1) calculates the deep cooling soaking time.I incubation period got 3 hours for W18Cr4V steel knife tool.
The intensification of step 3 cutter
After cutter sub-zero treatment holding stage was finished, the temperature of ging up was to room temperature, and different steel grades adopt different heating modes, and W18Cr4V steel knife tool can be placed in the air and slowly heat up.
The stress-removal heating of step 4 cutter
The cutter that temperature has gone back up to room temperature is put into 100 ℃ boiling water heating and was eliminated stress in 60 minutes, after heating finishes cutter is put into air and lowers the temperature.
For complex-shaped or large-scale W18Cr4V steel knife tool, can carry out 3 sub-zero treatments as stated above.
Sub-zero treatment equipment is an open type 100 liter vacuum insulation equipment, and its technical parameter is: storage medium: liquid nitrogen, liter capacity: 100ml, container day rate of evaporation≤3.5%/day, container closure vacuum tightness≤6.67 * 10 -3Pa, static venting rate≤1.33 * 10 of leaking of container interlayer -5Pa.L/s, adiabatic method: high vacuum+multilayer multi shields insulation, maximum capacity≤50Kg.

Claims (3)

1. deep cooling treatment method of high speed steel tool, it is characterized in that cutter carries out a tempering after quenching, carry out sub-zero treatment after the tempering, liquid nitrogen temperature is-185~-196 ℃, treats after the sub-zero treatment that cutter is returned to put it in 100 ℃ of boiling water heating after the room temperature 60 minutes.
2. a kind of deep cooling treatment method of high speed steel tool according to claim 1 is characterized in that the isothermal time of sub-zero treatment is: phase transformation incubation period+workpiece sectional dimension coefficient * workpiece sectional dimension.
3. a kind of deep cooling treatment method of high speed steel tool according to claim 1 is characterized in that cutter need carry out precooling treatment before putting into the liquid nitrogen insulation.
CNB2005100467999A 2005-06-28 2005-06-28 Deep cooling treatment method of high speed steel tool Expired - Fee Related CN100390305C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2005100467999A CN100390305C (en) 2005-06-28 2005-06-28 Deep cooling treatment method of high speed steel tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005100467999A CN100390305C (en) 2005-06-28 2005-06-28 Deep cooling treatment method of high speed steel tool

Publications (2)

Publication Number Publication Date
CN1718774A true CN1718774A (en) 2006-01-11
CN100390305C CN100390305C (en) 2008-05-28

Family

ID=35930722

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005100467999A Expired - Fee Related CN100390305C (en) 2005-06-28 2005-06-28 Deep cooling treatment method of high speed steel tool

Country Status (1)

Country Link
CN (1) CN100390305C (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100445024C (en) * 2006-10-19 2008-12-24 太原科技大学 Method for processing high speed steel screw tap
CN101982290A (en) * 2010-10-18 2011-03-02 哈尔滨工业大学 Manufacturing method of memory alloy balanced-load connecting damping element
CN102296167A (en) * 2011-08-11 2011-12-28 南车眉山车辆有限公司 Cryogenic treatment process for 9SiCr die steel used for railway freight cars
CN102329151A (en) * 2011-09-23 2012-01-25 重庆文理学院 Cryogenic treatment method for ceramic/metal ceramic cutting tool
CN102517438A (en) * 2011-12-14 2012-06-27 太原科技大学 Technique method for eliminating residual stress on high speed steel grinding surface
CN103343202A (en) * 2013-07-11 2013-10-09 太原理工大学 Quenching/subzero treatment method for heat treatment of low-temperature nickel steel
CN103352112A (en) * 2013-07-12 2013-10-16 上海汇众汽车车桥系统有限公司 Cryogenic process for prolonging service life of jet-moulded high-speed steel milling cutter
CN103525997A (en) * 2013-09-29 2014-01-22 三明学院 High-speed steel cryogenic treatment process
CN104175082A (en) * 2014-07-29 2014-12-03 成都亨通兆业精密机械有限公司 Turning tool manufacturing method facilitating prolonging of product service life and improvement of local tissue uniformity
CN104259798A (en) * 2014-07-29 2015-01-07 成都亨通兆业精密机械有限公司 Turning tool machining technology facilitating reduction of heat treatment defects
CN105586477A (en) * 2016-03-01 2016-05-18 江苏星火特钢有限公司 Method for improving hardness of 3D printing martensitic stainless steel structural part
CN106041437A (en) * 2016-07-07 2016-10-26 石家庄市藁城区北创刀具有限公司 Manufacturing process of anti-adhesion cutter
CN107475488A (en) * 2017-07-12 2017-12-15 昌河飞机工业(集团)有限责任公司 A kind of high-speed steel heat-treatment technology method
CN110629005A (en) * 2019-09-27 2019-12-31 烟台福尔精密机械有限公司 High-speed steel valve rod treatment process for common rail oil injector
CN112481472A (en) * 2020-11-27 2021-03-12 上海天竺机械刀片有限公司 Heat treatment process of alloy tool steel blade
CN112795762A (en) * 2020-12-29 2021-05-14 滁州科诺帝电器有限公司 Processing technology of grinding knife of soybean milk machine
CN113600629A (en) * 2021-08-09 2021-11-05 西北工业大学 Capillary tube deep cold drawing device and drawing method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08120334A (en) * 1994-10-17 1996-05-14 Ishikawajima Harima Heavy Ind Co Ltd High strength and high toughness stainless steel casting
JP4482174B2 (en) * 1999-05-10 2010-06-16 富士重工業株式会社 Heat treatment method for precipitation hardening stainless steel
KR100466171B1 (en) * 2000-08-25 2005-01-13 주식회사 포스코 Ultra low temperature heat treatment apparatus
CN1159461C (en) * 2001-10-16 2004-07-28 兰州理工大学 Deep-cold treating technology of steel workpiece

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100445024C (en) * 2006-10-19 2008-12-24 太原科技大学 Method for processing high speed steel screw tap
CN101982290A (en) * 2010-10-18 2011-03-02 哈尔滨工业大学 Manufacturing method of memory alloy balanced-load connecting damping element
CN102296167A (en) * 2011-08-11 2011-12-28 南车眉山车辆有限公司 Cryogenic treatment process for 9SiCr die steel used for railway freight cars
CN102329151A (en) * 2011-09-23 2012-01-25 重庆文理学院 Cryogenic treatment method for ceramic/metal ceramic cutting tool
CN102517438A (en) * 2011-12-14 2012-06-27 太原科技大学 Technique method for eliminating residual stress on high speed steel grinding surface
CN103343202A (en) * 2013-07-11 2013-10-09 太原理工大学 Quenching/subzero treatment method for heat treatment of low-temperature nickel steel
CN103343202B (en) * 2013-07-11 2015-10-28 太原理工大学 A kind of low temperature nickel Heat Treatment Of Steel quenching cryogenic treating process
CN103352112B (en) * 2013-07-12 2015-03-25 上海汇众汽车车桥系统有限公司 Cryogenic process for prolonging service life of jet-moulded high-speed steel milling cutter
CN103352112A (en) * 2013-07-12 2013-10-16 上海汇众汽车车桥系统有限公司 Cryogenic process for prolonging service life of jet-moulded high-speed steel milling cutter
CN103525997A (en) * 2013-09-29 2014-01-22 三明学院 High-speed steel cryogenic treatment process
CN104175082A (en) * 2014-07-29 2014-12-03 成都亨通兆业精密机械有限公司 Turning tool manufacturing method facilitating prolonging of product service life and improvement of local tissue uniformity
CN104259798A (en) * 2014-07-29 2015-01-07 成都亨通兆业精密机械有限公司 Turning tool machining technology facilitating reduction of heat treatment defects
CN105586477A (en) * 2016-03-01 2016-05-18 江苏星火特钢有限公司 Method for improving hardness of 3D printing martensitic stainless steel structural part
CN106041437A (en) * 2016-07-07 2016-10-26 石家庄市藁城区北创刀具有限公司 Manufacturing process of anti-adhesion cutter
CN106041437B (en) * 2016-07-07 2017-12-26 石家庄市藁城区北创刀具有限公司 The manufacture craft of anti-adhesion cutting knife
CN107475488A (en) * 2017-07-12 2017-12-15 昌河飞机工业(集团)有限责任公司 A kind of high-speed steel heat-treatment technology method
CN110629005A (en) * 2019-09-27 2019-12-31 烟台福尔精密机械有限公司 High-speed steel valve rod treatment process for common rail oil injector
CN112481472A (en) * 2020-11-27 2021-03-12 上海天竺机械刀片有限公司 Heat treatment process of alloy tool steel blade
CN112795762A (en) * 2020-12-29 2021-05-14 滁州科诺帝电器有限公司 Processing technology of grinding knife of soybean milk machine
CN113600629A (en) * 2021-08-09 2021-11-05 西北工业大学 Capillary tube deep cold drawing device and drawing method

Also Published As

Publication number Publication date
CN100390305C (en) 2008-05-28

Similar Documents

Publication Publication Date Title
CN1718774A (en) Deep cooling treatment method of high speed steel tool
Kalia Cryogenic processing: a study of materials at low temperatures
CN108285965B (en) Quenching-partitioning-deep cooling-tempering treatment process for steel material
CN105483542B (en) Steel for deep sea oil extraction equipment and manufacturing method of steel forge piece for deep sea oil extraction equipment
CN101660031A (en) Periodic sub-zero treatment process of finished high speed steel cutters
CN101693943A (en) High speed steel tool heat treatment method
CN1116430C (en) Unmodified high-toughness low-temp steel for high-energy line welding and its production method
CN110066912B (en) Corrosion-resistant high-strength 316L stainless steel and preparation method thereof
CN101037718A (en) Heat treating method for improving mechanical property of 42CrMo
Lu et al. Surface EBSD analysis and strengthening mechanism of AISI304 stainless steel subjected to massive LSP treatment with different pulse energies
CN106929785A (en) A kind of diphasic titanium alloy microstructure thinning method
CN1844415A (en) 17-4PH steel surface reinforcement method
Tong et al. Achieving excellent wear and corrosion properties in laser additive manufactured CrMnFeCoNi high-entropy alloy by laser shock peening
CN1159461C (en) Deep-cold treating technology of steel workpiece
CN1752265A (en) Heating technology for refining TiAl alloy ingot microscopic texture
US20040261917A1 (en) Thermal process for treating metals to improve structural characteristics
CN101838727A (en) Heat treatment method for carbide blade base
CN1899763A (en) Integrated grinding and strengthening process of micro alloy steel crankshaft neck and fillet
Qiu et al. Work toughening effect in Zr41Ti14Cu12. 5Ni10Be22. 5 bulk metallic glass
WO2007124396A2 (en) Treating an object having an amount of ceramic material
CN111020125A (en) Preparation method of high-strength low-temperature-resistant corrosion-resistant fastener
CN109112410A (en) A kind of low temperature resistant high-strength bolt and its production method
CN106756759B (en) Tough nitriding layer of a kind of ferrous alloy surface height and preparation method thereof
CN108754101A (en) A kind of cryogenic treatment process of AerMet100 steel
CN100351404C (en) Petroleum drilling rod joint higher hardness number treating process

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: DALIAN UNIVERSITY OF TECHNOLOGY MOLD RESEARCH CO.,

Free format text: FORMER OWNER: DALIAN UNIVERSITY OF TECHNOLOGY

Effective date: 20091002

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20091002

Address after: Mould Research Institute, No. 2, Ling Gong Road, Ganjingzi District, Dalian, Liaoning

Patentee after: Dalian Engineering Mould Research Institute Co Ltd

Address before: No. 2, Ling Gong Road, Ganjingzi District, Liaoning, Dalian

Patentee before: Dalian University of Technology

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080528

Termination date: 20120628