CN102796860A - Technique for thermal-treatment processing of high speed steel tools - Google Patents
Technique for thermal-treatment processing of high speed steel tools Download PDFInfo
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- CN102796860A CN102796860A CN2012103358654A CN201210335865A CN102796860A CN 102796860 A CN102796860 A CN 102796860A CN 2012103358654 A CN2012103358654 A CN 2012103358654A CN 201210335865 A CN201210335865 A CN 201210335865A CN 102796860 A CN102796860 A CN 102796860A
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Abstract
The invention relates to a technique for thermal-treatment processing of high speed steel tools. The technique comprises the following steps of: clamping tail handles of the tools; performing thermal preservation on the whole tools which are put into a medium-temperature salt furnace at 850 DEG C to enable the overall hardness of the tools to reach HRC (Rockwell hardness) 33-48, and then performing air cooling on the tools; performing thermal preservation on the precursors and edge parts of the tools in a high-temperature salt furnace at 1275 DEG C, and after a while, putting the precursors, edge parts and posterior bite guides of the tools into the high-temperature salt furnace to enable the hardness of the precursors and the edge parts to reach HRC 63-66, and the hardness of the posterior bite guides to reach HRC 53-58; and annealing the precursors to enable the hardness of the precursors to reach HRC 53-58. According to the technique, the different hardness of the different positions is achieved mainly by controlling the time of the tools in heating media, so that complicated processing steps are omitted, the working efficiency is greatly improved, the production period of the high-speed steel tools is shortened, and simultaneously, waste products are reduced.
Description
Technical field
The present invention relates to a kind of process method of speedy steel cutting-tool heat treatment process, be applicable to the thermal treatment process of high alloy tool steel effect cutter.
Background technology
Rapid steel is the high alloy tool steel that contains alloying elements such as more w, Mo, Cr, V, and its bending strength is higher, and better wilful, normal temperature hardness is at 62 ~ 66HRC, and its thermotolerance is about 600 ~ 660 ℃.Cutting edge is easy sharp during sharpening, so often be called " high-speed steel " aborning, the rapid steel of polishing is also claimed white steel.
Rapid steel is one of well-known machine tool steel.Although in single-point tool high speed cutting and difficult-to-machine material field, hard material share of income such as wimet is increasing, at multitool, experience a shock and the cut vibrated and during at the general material of processing, rapid steel is the main status of office still.How through thermal treatment excavate rapid steel potentiality, satisfy requirements of different users, mainly each link of thermal treatment process is controlled, guarantee the quality of speedy steel cutting-tool product.
It is extremely strict that the heat-treatment processing process of speedy steel cutting-tool is crossed range request; Operating process is extremely loaded down with trivial details, and its thermal treatment process in the past is: afterbody is installed-low-temperature prewarming of leading and blade-the middle temperature preheating of leading and blade-high temperature preheating of leading and blade-the low thermohaline scalping of leading and blade-the salt made from earth containing a comparatively high percentage of sodium chloride scalping cooling of leading and blade-air cooling of leading and blade-cleaning of leading and blade-leading and blade three tempering-leading annealing-blade clamping-after lead with the heating of caudal peduncle-after lead the annealing with a tempering-caudal peduncle of caudal peduncle.Its operating process is loaded down with trivial details, inefficiency, and usually because of the phenomenon of second-heating, the cracking that causes rear pilot to divide produces waste product.
Summary of the invention
The technical problem that the present invention will solve provides a kind of process method of speedy steel cutting-tool heat treatment process; This method is mainly controlled the different hardness of different positions through the time length of cutter entering heating medium; Thereby saved loaded down with trivial details process step; Improve working efficiency greatly, improved and produced at a high speed the production cycle of type cutter just, reduced the appearance of waste product simultaneously.
For overcoming the above problems, concrete technical scheme of the present invention is following: a kind of process method of speedy steel cutting-tool heat treatment process may further comprise the steps:
1) caudal peduncle of clamping cutter;
2) put into the integral body of cutter in 850 ℃ the middle thermohaline stove and be incubated, soaking time is (0.4 ~ 0.8) min/mm * tool diameter, and the integral hardness that makes cutter is HRC33-48, air cooling then;
3) put into the leading and blade of cutter 1275 ℃ high-temperature salt furnace; Be incubated, after for some time, with leading, the blade of cutter and after lead and all put into high-temperature salt furnace; Making the leading of cutter and blade hardness HRC is 63-66, after the hardness led be HRC53-58;
4) through the annealing of leading part, making leading hardness is HRC 53-58.
Soaking time in the described high-temperature salt furnace can be calculated according to following formula: S=1 minute+(4 ~ 6) second/mmL, wherein S was total time, and L is the thermal treatment size of workpiece.
The process method employing of this speedy steel cutting-tool heat treatment process is above-mentioned not to be walked; Lead after not only can reducing and middle temperature heating, heat, three operations such as process of cooling, tempering three times and annealing of caudal peduncle; Lead the phenomenon that second-heating takes place after can avoiding simultaneously, improved production efficiency, reduced the appearance of waste product; Can be generalized to all different sites below the 600mm fully, the workpiece that different hardness requires.
Embodiment
A kind of process method of the Ф 8mm speedy steel cutting-tool heat treatment process to diameter may further comprise the steps:
1) caudal peduncle of clamping cutter;
2) put into the integral body of cutter in 850 ℃ the middle thermohaline stove and be incubated, soaking time is (0.4 ~ 0.8) min/mm * tool diameter=0.6 min/mm * 8mm=4.8min, and the integral hardness that makes cutter is HRC33-48, air cooling then;
3) calculate in shared soaking time in thermohaline stove and the high-temperature salt furnace:
S=1 minute+(4 ~ 6) second/mmL=1 minute+6 seconds/mm * 8mm=1 minutes 48 seconds;
4) put into the leading and blade of cutter 1275 ℃ high-temperature salt furnace; Be incubated, after 1 minute 40 seconds, with leading, the blade of cutter and after lead and all put into high-temperature salt furnace; Time is 8 seconds; Leading and the blade hardness HRC of cutter is 63-66 like this, after the hardness led be HRC53-58, this time cut-point mainly decides according to the desired hardness of part;
5) through the annealing of leading part, making leading hardness is HRC 53-58.
Claims (2)
1. the process method of a speedy steel cutting-tool heat treatment process is characterized in that may further comprise the steps:
1) caudal peduncle of clamping cutter;
2) put into the integral body of cutter in 850 ℃ the middle thermohaline stove and be incubated, soaking time is (0.4 ~ 0.8) min/mm * tool diameter, and the integral hardness that makes cutter is HRC33-48, air cooling then;
3) put into the leading and blade of cutter 1275 ℃ high-temperature salt furnace; Be incubated, after for some time, with leading, the blade of cutter and after lead and all put into high-temperature salt furnace; Making the leading of cutter and blade hardness HRC is 63-66, after the hardness led be HRC53-58;
4) through the annealing of leading part, making leading hardness HRC is 53-58.
2. the process method of speedy steel cutting-tool heat treatment process as claimed in claim 1 is characterized in that: the soaking time in the described high-temperature salt furnace can be calculated according to following formula:
S=1 minute+(4 ~ 6) second/mmL, wherein S was total time, and L is the thermal treatment size of workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210335865.4A CN102796860B (en) | 2012-09-12 | 2012-09-12 | Technique for thermal-treatment processing of high speed steel tools |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210335865.4A CN102796860B (en) | 2012-09-12 | 2012-09-12 | Technique for thermal-treatment processing of high speed steel tools |
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| CN102796860A true CN102796860A (en) | 2012-11-28 |
| CN102796860B CN102796860B (en) | 2014-12-24 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846182A (en) * | 2015-06-17 | 2015-08-19 | 沈阳飞机工业（集团）有限公司 | Heat treatment method for high-speed steel tool with front guide and rear guide |
| CN106637069A (en) * | 2016-12-31 | 2017-05-10 | 马鞍山市三江机械有限公司 | Compound heat treatment process of industrial and mining tool material |
| CN107557542A (en) * | 2017-08-30 | 2018-01-09 | 深圳万佳互动科技有限公司 | A kind of final heat treatment method of cutter steel |
| CN107574298A (en) * | 2017-08-30 | 2018-01-12 | 深圳万佳互动科技有限公司 | A kind of solid waste crusher cutter steel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2139008A1 (en) * | 1971-08-04 | 1973-02-22 | Boehler & Co Ag Geb | Hardening and tempering high speed steels - for forming tools working under high loads |
| CN101153376A (en) * | 2006-09-26 | 2008-04-02 | 宝山钢铁股份有限公司 | Method for manufacturing high-vanadium, high-cobalt high speed steel |
| CN102453797A (en) * | 2010-11-01 | 2012-05-16 | 贵州航天风华精密设备有限公司 | One-time heat treatment method of integral high-speed steel cutter |
-
2012
- 2012-09-12 CN CN201210335865.4A patent/CN102796860B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2139008A1 (en) * | 1971-08-04 | 1973-02-22 | Boehler & Co Ag Geb | Hardening and tempering high speed steels - for forming tools working under high loads |
| CN101153376A (en) * | 2006-09-26 | 2008-04-02 | 宝山钢铁股份有限公司 | Method for manufacturing high-vanadium, high-cobalt high speed steel |
| CN102453797A (en) * | 2010-11-01 | 2012-05-16 | 贵州航天风华精密设备有限公司 | One-time heat treatment method of integral high-speed steel cutter |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846182A (en) * | 2015-06-17 | 2015-08-19 | 沈阳飞机工业（集团）有限公司 | Heat treatment method for high-speed steel tool with front guide and rear guide |
| CN104846182B (en) * | 2015-06-17 | 2017-05-31 | 沈阳飞机工业（集团）有限公司 | It is front and rear to lead high speed steel tool heat treatment method |
| CN106637069A (en) * | 2016-12-31 | 2017-05-10 | 马鞍山市三江机械有限公司 | Compound heat treatment process of industrial and mining tool material |
| CN107557542A (en) * | 2017-08-30 | 2018-01-09 | 深圳万佳互动科技有限公司 | A kind of final heat treatment method of cutter steel |
| CN107574298A (en) * | 2017-08-30 | 2018-01-12 | 深圳万佳互动科技有限公司 | A kind of solid waste crusher cutter steel |
| CN107557542B (en) * | 2017-08-30 | 2019-03-12 | 青岛钲瑞热处理有限公司 | A kind of final heat treatment method of cutter steel |
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| CN102796860B (en) | 2014-12-24 |
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