CN1718775A - Low temperature quencing heat treatment technology of high speed steel saw blade - Google Patents
Low temperature quencing heat treatment technology of high speed steel saw blade Download PDFInfo
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- CN1718775A CN1718775A CN 200510050477 CN200510050477A CN1718775A CN 1718775 A CN1718775 A CN 1718775A CN 200510050477 CN200510050477 CN 200510050477 CN 200510050477 A CN200510050477 A CN 200510050477A CN 1718775 A CN1718775 A CN 1718775A
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Abstract
A low-temp quenching technology for the saw blade made of high-speed steel in order to elongate its service life and improving its toughness and antiwear performance including such steps as preheating heating to 1080-1120 deg.C, quenching, cooling and tempering.
Description
Technical field the present invention relates to a kind of metal heat treatmet technology, specifically a kind of low temperature quenching thermal treatment process that is used to produce the high speed steel material of curve saw blade, reciprocating saw blade.
Background technology is present, and quench hot technology is all adopted in the processing of high speed steel material." thermal treatment handbook (second volume) chapter 8 " thermal treatment of instrument " has been told about the heat treatment regime of rapid steel, and to different types of high speed steel material, its quenching temperature is between 1170 ℃ to 1285 ℃.Quenching temperature as the W6Mo5Cr4V2 high speed steel material is 1230 ± 10 ℃.Even point out some high speed steel mould requirement high tenacity on some professional book, can reduce quenching temperature, but emphasize that all quenching temperature must not be than low 100 ℃ of normal quenching temperature.Quenching temperature as the W6Mo5Cr4V2 high speed steel material must be greater than 1130 ℃.
Summary of the invention technical problem to be solved by this invention is to propose a kind of low temperature quencing heat treatment technology of high speed steel saw blade that can effectively improve sawing life-span, toughness and the wear resistance of rapid steel sweep-saw, reciprocating saw.
For solving the problems of the technologies described above, low temperature quencing heat treatment technology of high speed steel saw blade of the present invention comprises following processing step: preheating, quenching, cooling and tempering, the Heating temperature of described quenching process is between 1080-1120 ℃.
Above-mentioned low temperature quencing heat treatment technology of high speed steel saw blade, it comprises following processing step: preheating for the first time, preheating for the second time, preheating for the third time, quenching, cooling, tempering for the first time, tempering for the second time and tempering for the third time.
Above-mentioned low temperature quencing heat treatment technology of high speed steel saw blade, to the high speed hacksaw blade material of profile of tooth≤1.4, the Heating temperature during quenching is 1080-1120 ℃, heat-eliminating medium is an oil, and tempering temperature is 500-550 ℃, be chilled to below 150 ℃ in each 2 hours after, return again for the second time, altogether Hui Sanci.
Above-mentioned low temperature quencing heat treatment technology of high speed steel saw blade, to profile of tooth greater than 1.4 less than 4 high speed hacksaw blade material, the Heating temperature during quenching is 1080-1120 ℃, heat-eliminating medium is an oil, and tempering temperature is 480-550 ℃, be chilled to below 150 ℃ in each 2 hours after, return again for the second time, altogether Hui Sanci.
The present invention is owing to adopted technique scheme, it utilizes the high-speed steel alloy carbide under the different heating temperature, different solubility, principle that role is also different and saw blade working hour, disconnected sawing was to requirement wear-resisting, impact resistance, to high speed hacksaw blade quench treatment under lower Heating temperature.Compare with existing quench hot technology, it has following advantage: 1, low temperature quenching crystal grain thin (grain fineness number＞11 grade), the close grain Rapid Steel Tool can improve the cutting life-span of being interrupted cutting tool.2, low temperature quenching matrix carbon content is low, good toughness, and the Ms point is high, and residual austenite is few.3, low temperature quenching undissolved carbide particle is thin, quantity is many, can improve saw blade toughness and wear resistance.4, low temperature quenching is difficult for taking place the bright layer of vacuum oil quenching, prevents " over carburizing ".
Embodiment is described in further detail the present invention below in conjunction with embodiment.
Embodiment one: Taihu Lake 130 reciprocating saws, material M2, profile of tooth 1.4.
The process of thermal treatment process and parameter such as following table:
| Heat treatment step | Charging temperature ℃ | Heating-up time (min) | Heating temperature ℃ | Heat-up time (min) | Vacuum tightness Pa |
| Preheating for the first time | ＜200 | 40 | 600 | 50 | 2-40 |
| Preheating for the second time | 30 | 850 | 30 | 2-40 | |
| Preheating for the third time | 30 | 1050 | 20 | 13-133 | |
| Quench | 25 | 1090-1100 | 25 | 13-133 | |
| Heat-eliminating medium | ZZ-1 vacuum oil | The oil cooling time (min) | 16-24 | Warm ℃ of oil | 40-75 |
| Charging temperature ℃ | Heating-up time (min) | Heating temperature ℃ | Heat-up time (min) | Vacuum tightness Pa | |
| Tempering for the first time | ＜150 | 60-150 | 520 | 120 | 2-40 |
| Tempering for the second time | ＜150 | 60-150 | 540 | 120 | 2-40 |
| Tempering for the third time | ＜150 | 60-150 | 540 | 120 | 2-40 |
| Quench, tempering pitch time (min) | ＜180 | Cooling time (min) | ＜120 | ||
Wherein, the purpose one of preheating is that preheating can reduce internal stress because of rapid steel is a high quality steel, prevents part deformation, cracking.The 2nd, because vacuum oven thermal conduction is slow, preheating can reduce the part internal-external temperature difference, shortens the heat time.The purpose of quenching is: the heating of quenching is to form austenite and make carbon and alloying element dissolves in austenite, obtains martensitic stucture after the quenching, keeps an amount of not molten primary carbide during quenching and is very important to improving the cutter wear resistance.The tempered purpose is in order to eliminate quenching stress, and stabilizing tissue reduces residual austenite, obtains performances such as required red hardness, wear resistance.
Embodiment two: reciprocating saw, material M2, length 200mm * thickness 1.0mm, profile of tooth 1.0.
Heat treatment process is identical with embodiment one, and the Heating temperature when wherein quenching is 1100 ℃, is incubated 25 minutes, oil cooling.Heating temperature during tempering is 550 ℃ (three times the tempered temperature is all identical), each 2 hours, and totally 3 times, air cooling.Carry out the sawing test with this reciprocating saw: first saw blade, saw 1 cun running water pipe, 75 circles.Second saw blade sawed 1 cun running water pipe, 77 circles.(and, sawing 1 cun running water pipe about 45 circles) (it is a circle that saw blade cuts down one section of running water pipe) with the reciprocating saw of original quench hot art breading
Embodiment three: bimetal reciprocating saw, material M2, length 205mm * thickness 1.0mm, profile of tooth 1.8.
Heat treatment process is identical with embodiment one, and the Heating temperature when wherein quenching is 1100 ℃, is incubated 25 minutes, oil cooling.Heating temperature during tempering for the first time is 550 ℃, is incubated 2 hours, air cooling.For the second time, the Heating temperature during tempering for the third time is 520 ℃, is incubated 2 hours, air cooling at every turn.Carry out the sawing test with this reciprocating saw: second saw blade, saw 1 cun running water pipe, 80 circles.
Claims (4)
1, low temperature quencing heat treatment technology of high speed steel saw blade comprises following processing step: preheating, quenching, cooling and tempering is characterized in that the Heating temperature of described quenching process is between 1080-1120 ℃.
2, low temperature quencing heat treatment technology of high speed steel saw blade as claimed in claim 1, it is characterized in that it comprises following processing step: preheating for the first time, preheating for the second time, preheating for the third time, quenching, cooling, tempering for the first time, tempering for the second time and tempering for the third time.
3, low temperature quencing heat treatment technology of high speed steel saw blade as claimed in claim 2, it is characterized in that, high speed hacksaw blade material to profile of tooth≤1.4, Heating temperature during quenching is 1080-1120 ℃, heat-eliminating medium is an oil, and tempering temperature is 500-550 ℃, be chilled to below 150 ℃ in each 2 hours after, return again for the second time, altogether Hui Sanci.
4, low temperature quencing heat treatment technology of high speed steel saw blade as claimed in claim 2, it is characterized in that, to profile of tooth greater than 1.4 less than 4 high speed hacksaw blade material, Heating temperature during quenching is 1080-1120 ℃, heat-eliminating medium is an oil, and tempering temperature is 480-550 ℃, be chilled to below 150 ℃ in each 2 hours after, return again for the second time, altogether Hui Sanci.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100504771A CN100342040C (en) | 2005-06-28 | 2005-06-28 | Low temperature quencing heat treatment technology of high speed steel saw blade |
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| CNB2005100504771A CN100342040C (en) | 2005-06-28 | 2005-06-28 | Low temperature quencing heat treatment technology of high speed steel saw blade |
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| CN1718775A true CN1718775A (en) | 2006-01-11 |
| CN100342040C CN100342040C (en) | 2007-10-10 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719645A (en) * | 2012-05-23 | 2012-10-10 | 温岭市永鑫工具有限公司 | Heat treatment method for twist drills |
| CN104128777A (en) * | 2014-07-29 | 2014-11-05 | 成都亨通兆业精密机械有限公司 | Turning tool machining technology capable of reducing heat damage and improving tempering quality |
| CN107937669A (en) * | 2017-11-28 | 2018-04-20 | 湖北工程职业学院 | A kind of heat treatment quenching process of Powder High-speed Steels punch die edge of a knife part |
| CN109266831A (en) * | 2018-11-26 | 2019-01-25 | 江苏天硕合金材料有限公司 | Heat treatment method is used in a kind of production of saw blade |
| CN112853051A (en) * | 2021-01-30 | 2021-05-28 | 佛山市德琞科技股份有限公司 | Heat treatment method of high-speed steel screw tap with compact thin VC layer on surface |
| CN113736965A (en) * | 2021-08-06 | 2021-12-03 | 浙江中箭工模具有限公司 | Vacuum heat treatment process for high-speed steel |
| CN114346322A (en) * | 2021-12-08 | 2022-04-15 | 江阴金缘锯业有限公司 | Preparation process of bimetallic strip saw blade |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1173049C (en) * | 2002-03-07 | 2004-10-27 | 南京理工大学 | Technology for making cutting tool with high-speed steel and low-carbon steel |
-
2005
- 2005-06-28 CN CNB2005100504771A patent/CN100342040C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719645A (en) * | 2012-05-23 | 2012-10-10 | 温岭市永鑫工具有限公司 | Heat treatment method for twist drills |
| CN102719645B (en) * | 2012-05-23 | 2014-08-27 | 温岭市永鑫工具有限公司 | Heat treatment method for twist drills |
| CN104128777A (en) * | 2014-07-29 | 2014-11-05 | 成都亨通兆业精密机械有限公司 | Turning tool machining technology capable of reducing heat damage and improving tempering quality |
| CN107937669A (en) * | 2017-11-28 | 2018-04-20 | 湖北工程职业学院 | A kind of heat treatment quenching process of Powder High-speed Steels punch die edge of a knife part |
| CN109266831A (en) * | 2018-11-26 | 2019-01-25 | 江苏天硕合金材料有限公司 | Heat treatment method is used in a kind of production of saw blade |
| CN112853051A (en) * | 2021-01-30 | 2021-05-28 | 佛山市德琞科技股份有限公司 | Heat treatment method of high-speed steel screw tap with compact thin VC layer on surface |
| CN113736965A (en) * | 2021-08-06 | 2021-12-03 | 浙江中箭工模具有限公司 | Vacuum heat treatment process for high-speed steel |
| CN114346322A (en) * | 2021-12-08 | 2022-04-15 | 江阴金缘锯业有限公司 | Preparation process of bimetallic strip saw blade |
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| CN100342040C (en) | 2007-10-10 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Haiyan United Hack-saw Factory Assignor: Ji Shenghua Contract record no.: 2010330002006 Denomination of invention: Low temperature quencing heat treatment technology of high speed steel saw blade Granted publication date: 20071010 License type: Exclusive License Open date: 20060111 Record date: 20100929 |
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Denomination of invention: Low temperature quencing heat treatment technology of high speed steel saw blade Effective date of registration: 20111208 Granted publication date: 20071010 Pledgee: Bank of Jiaxing Limited by Share Ltd Haiyan branch Pledgor: Ji Shenghua Registration number: 2011990000479 |
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Change date: 20130111 Contract record no.: 2010330002006 Assignee after: HAILIAN SAW INDUSTRY CO., LTD. Assignee before: Haiyan United Hack-saw Factory |
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Owner name: HAILIAN SAW INDUSTRY CO., LTD. Free format text: FORMER OWNER: JI SHENGHUA Effective date: 20130903 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130903 Address after: 314300 No. 8 Jinping Road, Qinshan Industrial Zone, Qinshan street, Haiyan County, Zhejiang Patentee after: HAILIAN SAW INDUSTRY CO., LTD. Address before: 314300, Qinshan County, Haiyan Town, Haiyan County, Zhejiang Province, No. 183, Qinshan Road Patentee before: Ji Shenghua |
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| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 314300 No. 8 Jinping Road, Qinshan Industrial Zone, Qinshan street, Haiyan County, Zhejiang, Jiaxing Patentee after: Hai Lian Sawing Technology Co., Ltd. Address before: 314300 No. 8 Jinping Road, Qinshan Industrial Zone, Qinshan street, Haiyan County, Zhejiang Patentee before: HAILIAN SAW INDUSTRY CO., LTD. |