CN100393905C - Vacuum heat treatment method for hard alloy for drilling - Google Patents
Vacuum heat treatment method for hard alloy for drilling Download PDFInfo
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- CN100393905C CN100393905C CNB2006100206480A CN200610020648A CN100393905C CN 100393905 C CN100393905 C CN 100393905C CN B2006100206480 A CNB2006100206480 A CN B2006100206480A CN 200610020648 A CN200610020648 A CN 200610020648A CN 100393905 C CN100393905 C CN 100393905C
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Abstract
The present invention relates to a method for the vacuum heat treatment of hard alloy used for drilling and rock drilling, which comprises the steps that a product is put into a two-chamber vacuum furnace to be heated; simultaneously, oil quenching is adopted under the protection of N2, tempering treatment is carried out at the temperature of 500 to 750 DEG C, and then, the treated product is tumbled for 3 to 8 hours. Compared with the alpha-Co content before treatment, the alpha-Co content in the metallographic structure of the obtained product can be increased by 10 to 30%, the impact toughness is increased by 20 to 40%, and the service life is extended by about 60%. As a result, the present invention can effectively improve the comprehensive mechanical performance of drilling teeth and bit sheets made of hard alloy and has the characteristics of favorable wear resistance and toughness, strong impact resistance, long service life, low using cost, high drilling effect, etc., and the phenomena of tipping, breakage and fracture, and premature wear in the using process are greatly reduced. The present invention overcomes the defects that high toughness, high impact resistance and high wear resistance which are required by the background art for products can be achieved simultaneously, and the phenomena of tipping, breakage and fracture, and premature wear are easy to occur when the products are used, so that the drilling and boring efficiency and the service life of a drilling tool are influenced, etc.
Description
Technical field
The invention belongs to geological drilling, mining, the rock drilling heat treating method of instrument, particularly a kind of at the carbide drill tooth of gear wheel brill class and the method that bore bit is heat-treated with a word pricker sheet.
Background technology
Conventional geological drilling, the Wimet of direct sintering moulding is generally all adopted in mining, rock drilling with brill tooth on the gear wheel brill class and the word pricker sheet on the drill head etc.Premium propertiess such as high rigidity, high-wearing feature and red hardness are good though this type of Hardmetal materials has, ultimate compression strength height; But also require good toughness, shock-resistant bearing the above-mentioned carbide drill tooth that uses under moving load and the shock load condition, a word pricker sheet etc. for need.Carbide drill tooth, a word pricker sheet that adopts traditional technology to produce then can't finely be taken into account high tenacity, shock-resistance and high wear-resisting.Therefore, in use exist and tipping, cataclasm and early stage wearing and tearing easily take place and cause use properties to descend, influence probing, cutter advance the disadvantages such as work-ing life of efficient and drilling tool.
Summary of the invention
The vacuum heat-treating method that the objective of the invention is a kind of probing of development research, rock drilling usefulness Wimet, to improve toughness, wear resistance and the comprehensive mechanical performance of carbide drill tooth, a word pricker sheet etc., reach wear resistance and good toughness, shock-resistance is strong, reduce the tipping in the use, cataclasm and early stage wear phenomenon, improve service efficiency, increase the service life, reduce purpose such as use cost.
Solution of the present invention is based on WC-Co at the composition that bores tooth, pricker sheet series hard alloy, Co had wherein both had cohesive action mutually, brittle WC grain had been linked together, when alloy body is subjected to the external force effect to produce deformation, have the strain energy of absorption, relaxation stress again, coordinate the effect of two-phase strain stress relation.The size of its effect is relevant with α-Co and ε-Co in the alloy structure, and the former is many more, and its effect is obvious more, and toughness is also good more, and almost is ε-Co phase entirely in the normal sintering product.The present invention promptly by under imposing a condition alloy product being carried out vacuum heat treatment, realizes its purpose with the amount that improves α-Co phase in the alloy body.Therefore, the inventive method comprises:
A quenches: in the heating chamber that carbide drill tooth that sintering is qualified or pricker sheet articles place two chamber vacuum furnace, the cold house contains quenching oil, the vacuum tightness of two Room is evacuated to below the 20Pa, then the heating chamber temperature is heated to 950～1300 ℃ gradually, is incubated 15～40 minutes; Charge into N to heating chamber and cold house successively again
2After the vacuum tightness of gas to two chamber all reaches 500～1000Pa, with the goods after the heating send in the quenching oil in the cold house, quench treatment 2～5 minutes, then goods are promoted to more than the pasta, treat that it naturally cools to below 100 ℃;
B, temper: cooled goods are sent back in the heating chamber again, be heated to 450～750 ℃ and be incubated 6～10 hours after, cool to room temperature with the furnace and come out of the stove;
C, barreling handle: the goods after the tempered processing were sent in the ball mill barreling 3～8 hours, get promptly that α-Co accounts for 10～30% finished product mutually in the Co phase composition; The ball mill ratio of grinding media to material is 2～5: 1,30～100 rev/mins of rotating speeds.
Mill ball during above-mentioned barreling is handled is sintered carbide ball or Wimet and hard cobble mixed grinding ball, and sphere diameter is φ 4～10mm.
Conventional carbide drill tooth, pricker sheet can improve 10～30% through the mutually shared Co phase of the α-Co composition that the inventive method is quenched, tempering and barreling are handled in the goods of back, have improved the toughness of goods in the wear resistance of raising goods effectively; Because tungsten at dissolving, the alloy structure of Co in mutually a series of variations also takes place, sphering takes place in WC grain polyhedron top, makes it become the spherule with wave crystal face.Adopt the goods impelling strength after the inventive method is handled to improve 20～40% before the processing; The forward and backward word pricker sheet of thermal treatment is made the probing simultaneous test, and under the same conditions, a undressed conventional word pricker sheet only can creep into 25 meters, and the pricker sheet after the present invention handles all can bore more than 40 meters.Thereby the present invention has the comprehensive mechanical performance that can effectively improve carbide drill tooth, pricker sheet, wear resistance, good toughness, and shock resistance is strong, greatly reduce the tipping in the use, cataclasm and early stage wear phenomenon, can increase the service life 60%, characteristics such as cutter advances the efficient height, and use cost is low.
Embodiment
Embodiment 1: to handle the trade mark is that the goods of YG10C are example:
A, at first the 100kg goods are sent in the 100 type double-chamber vacuum furnace heating chambers, the cold house adds the 1# vacuum quenching oil and all is evacuated to two Room vacuum tightnesss below the 20Pa, after at the uniform velocity being heated to 1230 ℃ from room temperature then, the insulation half an hour, charge into N successively to heating chamber and cold house again
2Gas, treat that vacuum tightness reaches 800Pa in the stove after, the goods after opening division board between two Room and will heat send into that cold house's quenching oil is interior, quench treatment is after 2.5 minutes, and goods are promoted to more than the pasta, wait to naturally cool to below 100 ℃, send back in the heating chamber again;
B, will send the goods reheat to 650 ℃ after the quenching of heating chamber back to, be incubated after 8 hours, and cool to room temperature with the furnace and come out of the stove stand-by;
C, the goods 300kg after the tempered processing is sent in the ball mill that diameter is φ 140mm, 40 rev/mins, barreling 6 hours get product; Mill ball is a sintered carbide ball, sphere diameter φ 4～10mm.
Resulting product impact ductility test average out to 6.96Nm/cm
2Mean value before handling improves 28.0%; α-Co phase composition improves 16% before than thermal treatment.
Embodiment 2: this enforcement is to be treated to example to the YG8C goods:
1080 ℃ of quenching temperatures, 3 minutes cool times, vacuum tightness when indoor heating and quenching and quenching oil and example 1 are together; 500 ℃ of tempering temperatures, 8 hours time; 5 hours barreling treatment times; All the other parameters and operation steps, method are all identical with embodiment 1.
Goods impelling strength average out to 5.18Nm/cm after present embodiment is handled
3More undressed control group improves 37.0%, and α in the metallographic structure-Co phase composition improves 13.0%.
Embodiment 3: so that thermal treatment is example to the YG15C goods:
1120 ℃ of quenching temperatures, 4 minutes quench treatment time, vacuum tightness when indoor heating and quenching and used quenching oil are also same with example 1; 700 ℃ of tempering temperatures, soaking time 8.5 hours; 7 hours barreling treatment times; Wherein the ratio of sintered carbide ball and hard cobble is 2: 1 in the mill ball; All the other parameters and operation steps, method are all identical with embodiment 1.
Average raising 20% before α-Co phase composition was handled in the goods metallographic structure after present embodiment was handled after testing; Impact ductility test average out to 7.24Nm/cm
2, more undressed control group on average improves 37.1%
Claims (2)
1. probing, the rock drilling vacuum heat-treating method of Wimet, its method comprises:
A, quenching: carbide drill tooth or pricker sheet articles that sintering is qualified place in the heating chamber of two chamber vacuum furnace, quenching oil is contained by the cold house, and the vacuum tightness of two Room is evacuated to below the 20Pa, then the heating chamber temperature was heated to gradually 950～1300 ℃, insulation 15～40 minutes; Charge into N to heating chamber and cold house successively again
2After the vacuum tightness of gas to two chamber all reaches 500～1000Pa, the goods after the heating are sent in the quenching oil in the cold house, quench treatment 2～5 minutes is promoted to goods more than the pasta then, treats that it naturally cools to below 100 ℃;
B, temper: above-mentioned cooled goods are sent back in the heating chamber again, be heated to 450～750 ℃ and be incubated 6～10 hours after, cool to room temperature with the furnace and come out of the stove;
C, barreling handle: the goods after the tempered processing were sent in the ball mill barreling 3～8 hours, get promptly that α-Co accounts for 10～30% finished product mutually in the Co phase composition; The ball mill ratio of grinding media to material is 2～5: 1, and rotating speed is 30～100 rev/mins.
2. by the vacuum heat-treating method of the described Wimet of claim 1: it is characterized in that the mill ball of barreling in handling is sintered carbide ball or Wimet and cobble mixed grinding ball firmly, sphere diameter is φ 4～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100206480A CN100393905C (en) | 2006-04-03 | 2006-04-03 | Vacuum heat treatment method for hard alloy for drilling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100206480A CN100393905C (en) | 2006-04-03 | 2006-04-03 | Vacuum heat treatment method for hard alloy for drilling |
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| Publication Number | Publication Date |
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| CN1827828A CN1827828A (en) | 2006-09-06 |
| CN100393905C true CN100393905C (en) | 2008-06-11 |
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| CNB2006100206480A Expired - Fee Related CN100393905C (en) | 2006-04-03 | 2006-04-03 | Vacuum heat treatment method for hard alloy for drilling |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050511B (en) * | 2007-05-18 | 2010-11-10 | 自贡硬质合金有限责任公司 | Vacuum heat treatment method for brazing sheet of hard alloy in low cobalt |
| CN101921975A (en) * | 2010-05-20 | 2010-12-22 | 长沙华信合金机电有限公司 | Production process for removing non-compound carbon phase in hard alloy |
| CN102443866A (en) * | 2010-10-08 | 2012-05-09 | 太仓荣文合成纤维有限公司 | Production method of oxygen-bar fiber with negative ion function |
| CN102021292A (en) * | 2010-10-21 | 2011-04-20 | 赣州伟嘉合金有限责任公司 | Method for eliminating stress of sintered hard alloy |
| CN103850652B (en) * | 2014-03-27 | 2015-11-18 | 湖南易通矿山工程机械有限公司 | A kind of rock bit carbide button mosaic technology |
| CN103952522A (en) * | 2014-05-17 | 2014-07-30 | 株洲硬质合金集团有限公司 | Heat treatment process of carbide alloy for cold heading dies |
| CN107855497A (en) * | 2017-11-02 | 2018-03-30 | 成立 | A kind of multilayer carbonization quenching crushes and boring tool and its manufacture craft |
| CN107876737A (en) * | 2017-11-02 | 2018-04-06 | 成立 | Multilayer carbonization quenching crushes and boring tool and its manufacture craft |
| CN107642334A (en) * | 2017-11-02 | 2018-01-30 | 成立 | Multilayer carbonization quenching crushes and boring tool and its manufacture craft |
| CN109604608A (en) * | 2018-12-26 | 2019-04-12 | 技锋精密刀具（马鞍山）有限公司 | A kind of high-performance carbide thin slice dise knife material and its manufacture craft |
| CN111286663B (en) * | 2020-03-27 | 2021-08-27 | 赣州有色冶金研究所有限公司 | High-strength high-hardness microcosmic segregation non-uniform-structure hard alloy and preparation method and application thereof |
Citations (4)
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| CN85100341A (en) * | 1985-04-01 | 1986-08-20 | 中南工业大学 | Technology for rolling impact of carbide surface |
| JP2003193171A (en) * | 2001-12-27 | 2003-07-09 | Hitachi Tool Engineering Ltd | Cemented carbide and production method therefor |
| US20040211493A1 (en) * | 2003-04-28 | 2004-10-28 | Comer Christopher Robert | Process to enhance brazability of carbide bits |
| CN1557983A (en) * | 2004-02-09 | 2004-12-29 | 自贡硬质合金有限责任公司 | Production method for hard carbide with graded distributed cobalt content |
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2006
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100341A (en) * | 1985-04-01 | 1986-08-20 | 中南工业大学 | Technology for rolling impact of carbide surface |
| JP2003193171A (en) * | 2001-12-27 | 2003-07-09 | Hitachi Tool Engineering Ltd | Cemented carbide and production method therefor |
| US20040211493A1 (en) * | 2003-04-28 | 2004-10-28 | Comer Christopher Robert | Process to enhance brazability of carbide bits |
| CN1557983A (en) * | 2004-02-09 | 2004-12-29 | 自贡硬质合金有限责任公司 | Production method for hard carbide with graded distributed cobalt content |
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| WC-Co YG13C硬质合金热处理工艺研究. 李智超，董允.机械工程材料，第4期. 1991 |
| WC-Co YG13C硬质合金热处理工艺研究. 李智超，董允.机械工程材料，第4期. 1991 * |
| 真空热处理对矿用硬质合金组织性能的影响. 周建华，孙宝琦，顾敏，赵少甫.金属热处理，第5期. 1998 |
| 真空热处理对矿用硬质合金组织性能的影响. 周建华，孙宝琦，顾敏，赵少甫.金属热处理，第5期. 1998 * |
| 硬质合金的真空热处理. 王德琛，姚晓山，樊东黎.金属热处理，第9期. 1993 |
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| CN1827828A (en) | 2006-09-06 |
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zigong West Asia Hi Tech Co., Ltd. Assignor: Zigong Cemented Carbides Co., Ltd. Contract record no.: 2011510000245 Denomination of invention: Vacuum heat treatment method for hard alloy for drilling Granted publication date: 20080611 License type: Exclusive License Open date: 20060906 Record date: 20110902 |
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Change date: 20140529 Contract record no.: 2011510000245 Assignee after: ZIGONG CHANGCHENG EQUIPMENT TECHNOLOGY CO., LTD. Assignee before: Zigong West Asia Hi Tech Co., Ltd. |
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Change date: 20140529 Contract record no.: 2011510000245 Assignee after: ZIGONG CHANGCHENG EQUIPMENT TECHNOLOGY CO., LTD. Assignee before: Zigong West Asia Hi Tech Co., Ltd. |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080611 Termination date: 20160403 |