CN102071386A - Thermo-magnetic composite file processing technique for hard alloy - Google Patents
Thermo-magnetic composite file processing technique for hard alloy Download PDFInfo
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- CN102071386A CN102071386A CN 201110007031 CN201110007031A CN102071386A CN 102071386 A CN102071386 A CN 102071386A CN 201110007031 CN201110007031 CN 201110007031 CN 201110007031 A CN201110007031 A CN 201110007031A CN 102071386 A CN102071386 A CN 102071386A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000002131 composite material Substances 0.000 title abstract 2
- 238000012545 processing Methods 0.000 title description 9
- 239000000956 alloy Substances 0.000 title description 5
- 229910045601 alloy Inorganic materials 0.000 title description 4
- 230000006698 induction Effects 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims description 29
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 238000009776 industrial production Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000010941 cobalt Substances 0.000 description 5
- 229910017052 cobalt Inorganic materials 0.000 description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 5
- 238000007669 thermal treatment Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 238000003672 processing method Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
一种硬质合金制品热磁复合场处理工艺，其特征在于：将硬质合金制品加热至400℃～1500℃，保温；对硬质合金施加脉冲磁场，作用时间0.5秒～10分钟后，出炉空冷；所述脉冲磁场磁感应强度为0.1～5T。本发明工艺合理、操作简单、可以有效改善硬质合金组织、明显提高其矫顽磁力和横向断裂强度与韧性，并能保证其硬度不降低；经处理的硬质合金样品可永久保持被提高的机械特性，且不引起外形尺寸变化，延长硬质合金制品的使用寿命，适于工业化生产。
A thermal-magnetic composite field treatment process for cemented carbide products, characterized in that: heating the cemented carbide products to 400°C to 1500°C and keeping them warm; applying a pulsed magnetic field to the cemented carbide for 0.5 seconds to 10 minutes before being released from the furnace Air cooling; the magnetic induction of the pulsed magnetic field is 0.1-5T. The invention has reasonable process and simple operation, can effectively improve the cemented carbide structure, significantly increase its coercive force, transverse fracture strength and toughness, and can ensure that its hardness does not decrease; the treated cemented carbide sample can permanently maintain the improved Mechanical properties, without causing changes in dimensions, prolonging the service life of cemented carbide products, suitable for industrial production.
Description
Technical field
The present invention relates to pyromagnetic compound the treatment process of a kind of Wimet, concrete is that thermal field and magnetic field are acted on hard metal article simultaneously in order to improve its performance.Belong to the Hardmetal materials technical field.
Background technology
Wimet be a kind of be the hard phase with carbide such as WC, serve as the cermet material of bonding phase with metals such as cobalt, nickel, iron, have intensity height, good characteristic that hardness is high, have important purposes in mining excavation, mechanical workout, circuit card processing and other fields.
Conventional thermal treatment is studied morely to the forefathers that influence of Wimet performance and tissue, and thermal treatment has become one of main means of the enhancing hard alloy performance that everybody generally acknowledges.Utilize the ppolymorphism of Co to change that (α-Co), (ε-Co), this is the theoretical foundation that present putative Wimet quenches with the solid matter cube cobalt that reduces plasticity difference under the low temperature with fast cold method solutionizing the good face-centered cubic cobalt of plasticity under the high temperature in recent years.
There are some researches show that thermal treatment (comprising heating and cooling) can improve the Wimet tissue, improves performance, increase the service life; And magnetic field treatment all has the effect of optimizing tissue, improving performance to iron and steel and many non-ferrous metal alloy materials.
Because Wimet is to do the hard phase by WC, cobalt or nickel etc. is done the matrix material of bonding phase, and wherein relevant with magnetic only is the phase that bonds, and is different from that its major portion all is the material relevant with magnetic in iron and steel or the non-ferrous metal.Therefore do not see so far and be applied to Wimet simultaneously to improve the open report of its performance pyromagnetic compound.The present invention makes up pyromagnetic compound Wimet is handled just as the foothold.
Summary of the invention
The object of the present invention is to provide a kind of technology reasonable, simple to operate, can effectively improve the Wimet tissue, obviously improve pyromagnetic compound the treatment process of the Wimet of its Coercive Force and cross-breaking strength.With pyromagnetic effect compound the time, can prolong Wimet work-ing life.
Pyromagnetic compound the treatment process of a kind of Wimet of the present invention is that Wimet is heated to 400 ℃～1500 ℃, is incubated after 10～40 minutes; Wimet is applied pulsed magnetic field, 0.5 second～10 minutes action time, the air cooling of coming out of the stove, described pulsed magnetic field magnetic induction density is 0.1～5T.
In pyromagnetic compound the treatment process of a kind of Wimet of the present invention, described Wimet is heated to 500 ℃～1400 ℃, is incubated after 10～40 minutes; Wimet is applied pulsed magnetic field, 0.5 second～10 minutes action time; Described pulsed magnetic field magnetic induction density is 0.5～5T.
In pyromagnetic compound the treatment process of a kind of Wimet of the present invention, described Wimet is heated to 900 ℃～1200 ℃, is incubated after 10～40 minutes; Wimet is applied pulsed magnetic field, 0.5 second～5 minutes action time; Described pulsed magnetic field magnetic induction density is 1～5T.
In pyromagnetic compound the treatment process of a kind of Wimet of the present invention; described heating is that to adopt a kind of in resistance furnace heating, induction heating, the microwave heating, described protective atmosphere under protective atmosphere be at least a in hydrogen, nitrogen, argon gas, ammonia, the methane gas.
In pyromagnetic compound the treatment process of a kind of Wimet of the present invention, described pulsed magnetic field adopts DC pulse magnetic field or alternating-current pulse magnetic field electricity, and the frequency of described pulsed magnetic field is (1～10) Hz.
The further improvement of pyromagnetic compound the treatment process of a kind of Wimet of the present invention is the Wimet that will adopt after handle pyromagnetic compound field, at 300～700 ℃, is incubated 0.5～5 hour, carries out temper.
The present invention is owing to adopt above-mentioned processing method, heat and magnetic are formed compound field act on Wimet simultaneously, tissue and performance to Wimet under the acting in conjunction of heat and magnetic exert an influence, this is because under heated condition, it is active that various particles in the material have higher heat, take place easily to move or turn to, magnetic particle just turns to easily or moves when have the action of a magnetic field this moment, thereby effectively improve the structure property and the particle distribution of material, guaranteeing to significantly improve its cross-breaking strength under the prerequisite that Wimet hardness does not reduce, the Coercive Force of Wimet obviously improves simultaneously, makes the Wimet life-span obtain prolonging.Comparative study is found, pyromagnetic compound the treatment effect to Wimet is better than independent thermal treatment and independent magnetic field treatment, data show, pyromagnetic compound processing Wimet can make its cross-breaking strength, Coercive Force, impelling strength improve 10～40%, and independent thermal treatment or magnetic treatment can only be brought up to about 0～10%.
This technology has following outstanding feature:
1, magnetic field treatment can act on whole material, be a kind of bulk treatment field, and be a kind of magnetic substance, when the action of a magnetic field as the cobalt metal of the bonding phase of Wimet, its crystal grain may directed deflection, thereby the Coercive Force of material is improved, material monolithic strengthened; On the other hand, the wolfram varbide that is dissolved in the bonding phase under the heated condition has little time in process of cooling from newly growing up at tungsten carbide crystal grain, and disperse be distributed in bonding mutually in or solid solution in bonding mutually in, thereby play the effect of dispersion-strengthened, solution strengthening, the impelling strength of material also is improved;
2, sample size is stable in the treating processes, and is not crooked, indeformable;
3, processing method is simple, and is easy to operate.
Description of drawings
The Wimet sample sem photograph of accompanying drawing 1 for handling
Accompanying drawing 2 is the sem photograph of Wimet sample after embodiment 1 art breading
Accompanying drawing 3 is the metallographic 1000X figure of the Wimet sample handled
Accompanying drawing 4 is the metallographic 1000X figure of Wimet sample after embodiment 1 art breading
As can be seen from comparison with Figure 1 and Figure 2, add magnetic field during to the carbide alloy high-temperature sample, its crystal grain orienting deflection has the consistent tendency of trend; And the tungsten carbide crystal grain surface becomes " sawtooth " shape, and this has increased the contact area of tungsten carbide crystal grain and Binder Phase, thereby has improved the adhesion between tungsten carbide crystal grain and the Binder Phase, and this makes cemented carbide exhibits go out the higher effect of intensity in macroscopic view. Fig. 3 and Fig. 4 contrast can find out that the tungsten carbide that is dissolved in Binder Phase under the heated condition has little time again to grow up at tungsten carbide crystal grain in cooling procedure, disperse be distributed in the Binder Phase or solid solution in Binder Phase, according to materialogy dispersion-strengtherning and solution strengthening principle, to improve the intensity of Binder Phase, thereby whole carbide alloy intensity is improved.
Embodiment
Also the present invention is described in detail in conjunction with the accompanying drawings below by embodiment.Following Example just meets the embodiment of the technology of the present invention content, does not illustrate that the present invention only limits to the described content of following embodiment, and the technician in the industry all belongs to content of the present invention according to the product of claim item of the present invention manufacturing.
Embodiment one
Wimet sample: YG6 (WC-6%Co)
Treatment process:
(1) pyromagnetic compound the processing: with the Wimet sample in resistance furnace, argon shield is heated to 1150 ℃, be incubated 10 minutes, when keeping Wimet hot, apply 0.5 second of DC pulse magnetic field then, magnetic induction density 5T, the frequency of pulsed magnetic field is 1Hz; Again the Wimet sample is cooled to room temperature.
(2) temper: the Wimet sample is heated to 500 ℃, is incubated 3 hours, be cooled to room temperature.
(3) tissue topography of usefulness scanning electron microscopic observation sample, the result is referring to accompanying drawing 2, with the metallographic structure of metaloscope observation sample, the result is referring to accompanying drawing 4, add magnetic field as can be seen during high temperature from accompanying drawing 2, accompanying drawing 4, its crystal grain orienting deflection, the wolfram varbide that is dissolved in the bonding phase under the heated condition has little time to grow up on tungsten carbide crystal grain again in process of cooling, disperse be distributed in bonding mutually in or solid solution in bonding mutually in, thereby play the effect of dispersion-strengthened, solution strengthening.The mechanical performance index of specimen and Coercive Force, data see Table 1.
Embodiment two
Wimet sample: YG6 (WC-6%Co)
Treatment process:
(1) pyromagnetic compound the processing: Wimet sample induction heating is heated to 800 ℃, be incubated 30 minutes, logical nitrogen protection applies 10 seconds of AC magnetic field then when the maintenance Wimet is hot, magnetic induction density 1T, and the frequency of pulsed magnetic field is 3Hz; Again the Wimet sample is cooled to room temperature.
(2) temper: the Wimet sample is heated to 400 ℃, is incubated 2 hours, be cooled to room temperature.
(3) mechanical property of specimen and Coercive Force, data see Table 1.
Embodiment three
Wimet sample: YG15 (WC-15%Co)
Treatment process:
(1) pyromagnetic compound the processing: with Wimet sample microwave heating to 1200 ℃, be incubated 40 minutes, logical protection of ammonia applies 5 seconds of AC magnetic field then when the maintenance Wimet is hot, magnetic induction density 0.1T, and the frequency of pulsed magnetic field is 10Hz; Again the Wimet sample is cooled to room temperature.
(2) temper: the Wimet sample is heated to 700 ℃, is incubated 5 hours, be cooled to room temperature.
(3) mechanical property of specimen and Coercive Force, data see Table 1.
Embodiment four
Wimet sample: YG15 (WC-15%Co)
Treatment process:
(1) pyromagnetic compound the processing: with Wimet sample microwave heating to 700 ℃, be incubated 20 minutes, the ventilating methane protection applied AC magnetic field 10 minutes then when the maintenance Wimet is hot, magnetic induction density 0.5T, and the frequency of pulsed magnetic field is 7Hz; Again the Wimet sample is cooled to room temperature.
(2) temper: the Wimet sample is heated to 300 ℃, is incubated 0.5 hour, be cooled to room temperature.
(3) mechanical property of specimen and Coercive Force, data see Table 1.
Embodiment five
Wimet sample: YN6 (WC-6%Ni)
Treatment process:
(1) pyromagnetic compound the processing: with the Wimet sample in resistance furnace, argon shield is heated to 800 ℃, be incubated 30 minutes, logical nitrogen protection applies 10 seconds of AC magnetic field then when keeping Wimet hot, magnetic induction density 1T, the frequency of pulsed magnetic field is 5Hz; Again the Wimet sample is cooled to room temperature.
(2) temper: the Wimet sample is heated to 400 ℃, is incubated 2 hours, be cooled to room temperature.
(3) mechanical property of specimen and Coercive Force, data see Table 1.
Embodiment six
Wimet sample: YN15 (WC-15%Ni)
Treatment process:
(1) pyromagnetic compound the processing: with Wimet sample induction heating to 700 ℃, be incubated 20 minutes, logical hydrogen shield applied AC magnetic field 10 minutes then when the maintenance Wimet is hot, magnetic induction density 0.5T, and the frequency of pulsed magnetic field is 9Hz; Again the Wimet sample is cooled to room temperature.
(2) temper: the Wimet sample is heated to 300 ℃, is incubated 0.5 hour, be cooled to room temperature.
(3) mechanical property of specimen and Coercive Force, data see Table 1.
Wimet after above-mentioned art breading carries out cross-breaking strength, Vickers' hardness, Coercive Force test and impelling strength experiment, and with metaloscope and scanning electron microscope sample before and after handling has been carried out the observation of microscopic appearance.Experimental data sees Table 1 (result is the statistical average value of 20 samples).
Table 1
As can be known from Table 1, hardness, cross-breaking strength and Coercive Force and the impelling strength of the Wimet sample of handling through this processing method all are significantly improved, illustrate that processing method of the present invention can effectively improve the mechanical property of Wimet, and can obviously improve its Coercive Force.
Claims (6)
1. pyromagnetic compound the treatment process of hard metal article is characterized in that: hard metal article is heated to 400 ℃～1500 ℃, is incubated after 10～40 minutes; Wimet is applied pulsed magnetic field, after 0.5 second～10 minutes action time, the air cooling of coming out of the stove; Described pulsed magnetic field magnetic induction density is 0.1～5T.
2. pyromagnetic compound the treatment process of a kind of Wimet according to claim 1 is characterized in that: described Wimet is heated to 500 ℃～1400 ℃, is incubated after 10～40 minutes; Wimet is applied pulsed magnetic field, 0.5 second～10 minutes action time; Described pulsed magnetic field magnetic induction density 0.5～5T.
3. pyromagnetic compound the treatment process of a kind of Wimet according to claim 2 is characterized in that: described Wimet is heated to 900 ℃～1200 ℃, is incubated after 10～40 minutes; Wimet is applied pulsed magnetic field, 0.5 second～5 minutes action time; Described pulsed magnetic field magnetic induction density 1～5T.
4. according to claim 1,2, pyromagnetic compound the treatment process of 3 any described a kind of Wimet; it is characterized in that: described heating is that to adopt a kind of in resistance furnace heating, induction heating, the microwave heating, described protective atmosphere under protective atmosphere be at least a in hydrogen, nitrogen, argon gas, ammonia, the methane gas.
5. pyromagnetic compound the treatment process of a kind of Wimet according to claim 4, it is characterized in that: described pulsed magnetic field adopts DC pulse magnetic field or alternating-current pulse magnetic field electricity, and the frequency of described pulsed magnetic field is (1～10) Hz.
6. pyromagnetic compound the treatment process of a kind of Wimet according to claim 5 is characterized in that: will adopt the Wimet after handle pyromagnetic compound field, and at 300 ℃～700 ℃, be incubated 0.5～5 hour, and carry out temper.
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| CN2011100070316A CN102071386B (en) | 2011-01-13 | 2011-01-13 | Thermo-magnetic composite file processing technique for hard alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191728A (en) * | 2016-07-13 | 2016-12-07 | 厦门钨业股份有限公司 | A kind of Technology for Heating Processing of hard alloy workpiece |
| CN110629143A (en) * | 2019-10-29 | 2019-12-31 | 大连理工大学 | A method for in-situ synthesis of fibrous nano-tungsten carbide on the surface of cemented carbide |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007346A (en) * | 2007-01-11 | 2007-08-01 | 武汉理工大学 | Sintering method of WC-Co cemented carbide |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007346A (en) * | 2007-01-11 | 2007-08-01 | 武汉理工大学 | Sintering method of WC-Co cemented carbide |
Non-Patent Citations (1)
| Title |
|---|
| 《煤矿现代化》 20061231 吴刚等 刀具低频脉冲磁化处理机的研制与应用 第51-52页 1-6 , 第4期 2 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191728A (en) * | 2016-07-13 | 2016-12-07 | 厦门钨业股份有限公司 | A kind of Technology for Heating Processing of hard alloy workpiece |
| CN106191728B (en) * | 2016-07-13 | 2017-12-26 | 厦门钨业股份有限公司 | A kind of Technology for Heating Processing of hard alloy workpiece |
| CN110629143A (en) * | 2019-10-29 | 2019-12-31 | 大连理工大学 | A method for in-situ synthesis of fibrous nano-tungsten carbide on the surface of cemented carbide |
| CN110629143B (en) * | 2019-10-29 | 2021-05-18 | 大连理工大学 | Method for in-situ synthesis of fibrous nano tungsten carbide on surface layer of hard alloy |
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