CN105695716A - Heat treatment method for hard alloy cutter - Google Patents

Heat treatment method for hard alloy cutter Download PDF

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Publication number
CN105695716A
CN105695716A CN201610060824.7A CN201610060824A CN105695716A CN 105695716 A CN105695716 A CN 105695716A CN 201610060824 A CN201610060824 A CN 201610060824A CN 105695716 A CN105695716 A CN 105695716A
Authority
CN
China
Prior art keywords
heat treatment
treatment method
hard alloy
speed
carbide tool
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
CN201610060824.7A
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Chinese (zh)
Inventor
唐振荣
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.)
LIUZHOU ANLONG MACHINERY EQUIPMENT CO Ltd
Original Assignee
LIUZHOU ANLONG MACHINERY EQUIPMENT 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 LIUZHOU ANLONG MACHINERY EQUIPMENT CO Ltd filed Critical LIUZHOU ANLONG MACHINERY EQUIPMENT CO Ltd
Priority to CN201610060824.7A priority Critical patent/CN105695716A/en
Publication of CN105695716A publication Critical patent/CN105695716A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/613—Gases; Liquefied or solidified normally gaseous material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum

Abstract

The invention discloses a heat treatment method for a hard alloy cutter and relates to the technical filed of hard alloy materials. The heat treatment method comprises the following steps that the hard alloy cutter is put into a vacuum furnace to be heated to 1200-1280 DEG C, heat preservation is conducted for 0.5-1 h, the vacuum degree is controlled to be 0.4-0.6 Pa, then the temperature is raised to 1350-1400 DEG C, and heat preservation is conducted for 1-1.5 h; after heat preservation, 10-20 bar cooling gas is led in for gas quenching, the temperature is lowered to 800 DEG C or below at the speed of 100-200 DEG C/min, and then cooling is conducted to the room temperature at the speed of 5-10 DEG C/min; and tempering is conducted under the 400-500 DEG C condition for 1-1.5 hours for three times. Through the heat treatment method, the problems that according to an existing heat treatment method for a hard alloy cutter, pollution is serious, and the produced cutter is unstable in performance are solved.

Description

The heat treatment method of carbide tool
Technical field
The present invention relates to Hardmetal materials technical field, the heat treatment method of especially a kind of carbide tool。
Background technology
Hard alloy has a feature of high rigidity and wearability because of it, and is widely used for making wear part, cutting element, mould, mine excavation instrument, geological drilling tools, oil exploitation instrument, constitutional detail, the cylinder body of high temperature high voltage resistant and mechanical seal part etc.。At present, the cutting speed of carbide alloy cutting tool than the high Radix Achyranthis Bidentatae of carbon steel, high 4-7 times than high-speed steel, but, the problem that ubiquity bending strength is low for they, poor impact toughness, fragility are big and easy to wear, in order to solve the problems referred to above, can carry out heat treatment to carbide tool mostly。The heat treatment of existing a kind of carbide tool adopts salt bath quenching or oil hardening, carry out temper technique again, although this process technique can improve the combination properties such as the hardness of alloy cutter, bending strength, toughness, wearability, but it is seriously polluted, and the cutting performance produced is unstable。
Summary of the invention
It is an object of the invention to provide the heat treatment method of a kind of carbide tool, it can solve the problem that existing carbide tool heat treatment method exists seriously polluted, the problem that the cutting performance produced is unstable。
In order to solve the problems referred to above, the technical solution used in the present invention is: the heat treatment method of a kind of carbide tool comprises the following steps:
A, being put into by carbide tool and heat in vacuum drying oven to 1200-1280 DEG C, be incubated 0.5-1h, vacuum degree control is 0.4-0.6Pa, is then warmed up to 1350-1400 DEG C, is incubated 1-1.5h；
B, insulation pass into the cooling gas of 10-20bar and carry out air quenching after terminating, be cooled to less than 800 DEG C with the speed of 100-200 DEG C/min, then be cooled to room temperature with the speed of 5-10 DEG C/min；
C, tempering 1-1.5 hour, tempering three times when 400-500 DEG C。
In the technical scheme of the heat treatment method of above-mentioned carbide tool, technical scheme is it may also is that described cooling gas is argon or nitrogen more specifically。
Owing to have employed technique scheme, the present invention compared with prior art has the advantages that the environmental pollution of vacuum air-quenching is little, and the alloy property after process is stable, toughness and hardness can be all better, hardness reaches 100HRA, more than bending strength 2800MPa, and fracture toughness reaches 18MPa m1/2。
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1
The heat treatment method of the carbide tool of the present embodiment comprises the following steps:
A, being put into by carbide tool and heat in vacuum drying oven to 1200-1230 DEG C, be incubated 1h, vacuum degree control is 0.4-0.6Pa, is then warmed up to 1350-1370 DEG C, is incubated 1.5h；
B, insulation pass into the cooling gas of 10-13bar and carry out air quenching after terminating, cooling gas is nitrogen, is cooled to less than 800 DEG C with the speed of 100 DEG C/min, then is cooled to room temperature with the speed of 10 DEG C/min；
C, tempering 1.5 hours, tempering three times when 400 DEG C。
The performance indications of the heat treated carbide tool of this example are as follows: hardness is 100HRA, and bending strength is 2800MPa, and fracture toughness is 18MPa m1/2。
Embodiment 2
The heat treatment method of the carbide tool of the present embodiment comprises the following steps:
A, being put into by carbide tool and heat in vacuum drying oven to 1260-1280 DEG C, be incubated 0.5h, vacuum degree control is 0.4-0.6Pa, is then warmed up to 1385-1400 DEG C, is incubated 1h；
B, insulation pass into the cooling gas of 16-20bar and carry out air quenching after terminating, cooling gas is nitrogen, is cooled to less than 800 DEG C with the speed of 200 DEG C/min, then is cooled to room temperature with the speed of 5 DEG C/min；
C, tempering 1 hour, tempering three times when 500 DEG C。
The performance indications of the heat treated carbide tool of this example are as follows: hardness is 102HRA, and bending strength is 2835MPa, and fracture toughness is 18.9MPa m1/2。
Embodiment 3
The heat treatment method of the carbide tool of the present embodiment comprises the following steps:
A, being put into by carbide tool and heat in vacuum drying oven to 1230-1260 DEG C, be incubated 1h, vacuum degree control is 0.4-0.6Pa, is then warmed up to 1370-1385 DEG C, is incubated 1.5h；
B, insulation pass into the cooling gas of 13-16bar and carry out air quenching after terminating, cooling gas is argon, is cooled to less than 800 DEG C with the speed of 150 DEG C/min, then is cooled to room temperature with the speed of 8 DEG C/min；
C, tempering 1 hour, tempering three times when 460 DEG C。
The performance indications of the heat treated carbide tool of this example are as follows: hardness is 108HRA, and bending strength is 2876MPa, and fracture toughness is 19.5MPa m1/2。

Claims (2)

1. the heat treatment method of a carbide tool, it is characterised in that comprise the following steps:
A, being put into by carbide tool and heat in vacuum drying oven to 1200-1280 DEG C, be incubated 0.5-1h, vacuum degree control is 0.4-0.6Pa, is then warmed up to 1350-1400 DEG C, is incubated 1-1.5h；
B, insulation pass into the cooling gas of 10-20bar and carry out air quenching after terminating, be cooled to less than 800 DEG C with the speed of 100-200 DEG C/min, then be cooled to room temperature with the speed of 5-10 DEG C/min；
C, tempering 1-1.5 hour, tempering three times when 400-500 DEG C。
2. the heat treatment method of carbide tool according to claim 1, it is characterised in that: described cooling gas is argon or nitrogen。
CN201610060824.7A 2016-01-29 2016-01-29 Heat treatment method for hard alloy cutter Pending CN105695716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610060824.7A CN105695716A (en) 2016-01-29 2016-01-29 Heat treatment method for hard alloy cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610060824.7A CN105695716A (en) 2016-01-29 2016-01-29 Heat treatment method for hard alloy cutter

Publications (1)

Publication Number Publication Date
CN105695716A true CN105695716A (en) 2016-06-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610060824.7A Pending CN105695716A (en) 2016-01-29 2016-01-29 Heat treatment method for hard alloy cutter

Country Status (1)

Country Link
CN (1) CN105695716A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107904386A (en) * 2017-11-13 2018-04-13 遵义中铂硬质合金有限责任公司 A kind of tool heat treatment method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4867808A (en) * 1987-10-28 1989-09-19 Degussa Aktiengesellschaft Heat treating a metallic workpiece by quenching under cooling gas under above atmospheric pressure and specified circulation rate
CN101481783A (en) * 2009-03-04 2009-07-15 中南大学 Double-chamber high pressure gas quenching technological process for cemented carbide
CN101724735A (en) * 2009-12-18 2010-06-09 安泰科技股份有限公司 Heat treating method for medium-carbon chromium-molybdenum steel base steel bond hard alloy
CN101838727A (en) * 2010-05-24 2010-09-22 株洲钻石切削刀具股份有限公司 Heat treatment method for carbide blade base
CN102912099A (en) * 2011-08-03 2013-02-06 顾勤秀 Heat treatment method for hard alloy blade
CN103469125A (en) * 2013-09-10 2013-12-25 株洲硬质合金集团有限公司 Heat treatment method of WC-Co-Ni3Al hard alloy
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4867808A (en) * 1987-10-28 1989-09-19 Degussa Aktiengesellschaft Heat treating a metallic workpiece by quenching under cooling gas under above atmospheric pressure and specified circulation rate
US4867808B1 (en) * 1987-10-28 1994-02-22 Leybold Durferrit Gmbh
CN101481783A (en) * 2009-03-04 2009-07-15 中南大学 Double-chamber high pressure gas quenching technological process for cemented carbide
CN101724735A (en) * 2009-12-18 2010-06-09 安泰科技股份有限公司 Heat treating method for medium-carbon chromium-molybdenum steel base steel bond hard alloy
CN101838727A (en) * 2010-05-24 2010-09-22 株洲钻石切削刀具股份有限公司 Heat treatment method for carbide blade base
CN102912099A (en) * 2011-08-03 2013-02-06 顾勤秀 Heat treatment method for hard alloy blade
CN103469125A (en) * 2013-09-10 2013-12-25 株洲硬质合金集团有限公司 Heat treatment method of WC-Co-Ni3Al hard alloy
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107904386A (en) * 2017-11-13 2018-04-13 遵义中铂硬质合金有限责任公司 A kind of tool heat treatment method

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Application publication date: 20160622

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