CN106180593A - A kind of Roll Collar manufacture method based on WC hard alloy - Google Patents
A kind of Roll Collar manufacture method based on WC hard alloy Download PDFInfo
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Abstract
The invention discloses a kind of Roll Collar manufacture method based on WC hard alloy.Including hard phase 30% 40% and Binder Phase 60% 70%, also include following making step: material configuration, melting, cast and process, the process such as heat treatment, Nitrizing Treatment.The WC of hard phase that the present invention uses and pottery, and the cast composition that the Binder Phase of alloy forms this Roll Collar, owing to WC is matrix so that Roll Collar has higher high temperature resistance wearability；WC and pottery by adding have high rigidity, thus have high anti-wear performance, improve service life.
Description
Technical field
The invention belongs to Roll Collar technical field, particularly relate to a kind of Roll Collar making side based on WC hard alloy
Method.
Background technology
The equipment dress of the steel rolling that Roll Collar mainly guides, auxiliary rolls blank or finished product runs through, is iron and steel
Parts the most crucial on factory's bar and wire rod rolling line, it is desirable to there is warm wearability relatively, only metallurgy industry
Need to consume all kinds of roll material about 2,000,000 tons China's year, and performance is difficult to meet requirement, therefore, annual flower multi-billion dollar is from state
How outer import, therefore, reduce its cost, improve its performance, become the main contents of future studies.
The main Roll Collar material used has: austenitic heat-resistance steel, martensite heat-resistant steel and hard alloy etc. three
Kind.Due to steel bonded carbide existing hard alloy high elastic modulus, high rigidity and the advantage of high-wearing feature, there is again alloy tool
Steel machinable and can the feature such as heat treatment, for cold working mould achieved with significant techno-economic effect.
In the wire rod operation of rolling, steel billet is with higher temperature (900～1250 DEG C) and higher speed (more than 50m/s)
By guide and guards, simultaneously for cooling roll and guide and guards, need ceaselessly to the cooling water of its surface injection certain pressure.
Therefore, guide and guards at relatively high temperatures, should bear rapid heat cycle impact, bear sliding frictional wear again and steel billet enters
The shock loading applied during mouth, working condition is very severe, when the heat spreader of Roll Collar is smooth, easily causes Roll Collar
Loss was even lost efficacy.
Roll Collar uses the metal materials such as heat resisting steel mostly at present, owing to metal hardness wearability at high temperature is low, and
And poor chemical stability under high temperature, therefore in use there will be high temperature wear inefficacy, steel bonding inefficacy at Roll Collar, pull
The failure modes such as inefficacy, heat exhaustion and hot tearing inefficacy.Additionally due to the density of metal is high, in high speed rotary motion, heavy is led
Defend roller and the bearing installed therein can be produced the biggest stress, easily cause the inefficacy of bearing.Therefore from Roll Collar material
Itself consider that the measure preventing above inefficacy is to improve the hardness of material, wearability, toughness and oxidation-resistance property.
Summary of the invention
It is an object of the invention to provide a kind of Roll Collar manufacture method based on WC hard alloy, by the hard used
The WC of phase and pottery, and the cast composition that the Binder Phase of alloy forms this Roll Collar, owing to WC is matrix so that Roll Collar has
Higher high temperature resistance wearability；WC and pottery by adding have high rigidity, thus have high anti-wear performance, improve and use
Life-span.
For solving above-mentioned technical problem, the present invention is achieved by the following technical solutions:
The present invention is a kind of Roll Collar manufacture method based on WC hard alloy, including hard phase 30%-40% and bonding
Phase 60%-70%；Also include following making step:
Step one, material configures:
A hard phase includes WC68%-79% and pottery 21%-32%；
B Binder Phase includes the pig iron, ferrotungsten, vanadium iron, ferrochrome, ferronickel, molybdenum-iron, ferrosilicon and ferromanganese；
Wherein, Binder Phase is made up of the chemical composition of following weight percents: C 1.9～2.4%；W 1.0～2.0%；V
0.4～0.8%；Cr 18.5～25.0%；Mo 1.2～1.4%, Si 0.37～0.54%, Ni0.17～0.24%, S ＜
0.02%, P ＜ 0.02%, surplus is Fe and inevitable trace impurity；
Step 2, melting:
By the Hybrid Heating fusing in medium-frequency induction furnace of the Binder Phase in step one；Liquid steel temperature reaches 1630～1750
DEG C time, stop heating, room temperature stands after 10-20min, adds hard phase, heating, makes liquid steel temperature reach 1760～1780 DEG C
Time, stop heating, after room temperature stands 1-2h, come out of the stove into casting ladle；
Step 3, casts and processes: when liquid steel temperature is down to 1450～1470 DEG C, molten steel is poured into casting mold, is led
Defending roller blank, Roll Collar blank, after sand removal, going dead head to process, enters stove and is heated to 880～920 DEG C, after being incubated 4～6 hours,
Stove is cooled to air cooling after temperature is less than 500 DEG C and, to room temperature, then carries out roughing；
Step 4, heat treatment: continue to be heated to 1020～1050 DEG C into stove by the Roll Collar after processing, be incubated 2～4 hours
After, carry out machine finishing；Quenching cooling 40～60 minutes in the oil quenching bath that temperature is 100～150 DEG C, subsequently 200
～220 DEG C of tempering are incubated 8～10 hours, air cooling of coming out of the stove is to room temperature；
Step 5, Nitrizing Treatment: the Roll Collar surface after step 4 being processed carries out nitriding, is carried out continuously 2-3 time, every time
Nitriding temperature reduces by 5 DEG C.
The method have the advantages that
1, the present invention uses the WC of hard phase and pottery, and the cast composition that the Binder Phase of alloy forms this Roll Collar,
Owing to WC is matrix so that Roll Collar has higher high temperature resistance wearability.
2, the Roll Collar of the present invention has the high hardness of higher high temperature microstructure good stability and intensity, by the WC added
With pottery, there is high rigidity, thus there is high anti-wear performance, improve service life.
Certainly, the arbitrary product implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of protection of the invention.
Embodiment one
This Roll Collar is by hard phase 30% and Binder Phase 70%；Also include following making step:
Step one, material configures:
A hard phase includes WC68% and pottery 32%；
B Binder Phase includes the pig iron, ferrotungsten, vanadium iron, ferrochrome, ferronickel, molybdenum-iron, ferrosilicon and ferromanganese；
Wherein, Binder Phase is made up of the chemical composition of following weight percents: C 1.9%；W 1.0%；V 0.4%；Cr
18.0%；Mo 1.2%, Si 0.37%, Ni 0.17%, S ＜ 0.02%, P ＜ 0.02%, surplus is that Fe is with inevitable
Trace impurity；
Step 2, melting:
By the Hybrid Heating fusing in medium-frequency induction furnace of the Binder Phase in step one；Liquid steel temperature reaches 1630～1750
DEG C time, stop heating, room temperature stands after 10-20min, adds hard phase, heating, makes liquid steel temperature reach 1760～1780 DEG C
Time, stop heating, after room temperature stands 1-2h, come out of the stove into casting ladle；
Step 3, casts and processes: when liquid steel temperature is down to 1450～1470 DEG C, molten steel is poured into casting mold, is led
Defending roller blank, Roll Collar blank, after sand removal, going dead head to process, enters stove and is heated to 880～920 DEG C, after being incubated 4～6 hours,
Stove is cooled to air cooling after temperature is less than 500 DEG C and, to room temperature, then carries out roughing；
Step 4, heat treatment: continue to be heated to 1020～1050 DEG C into stove by the Roll Collar after processing, be incubated 2～4 hours
After, carry out machine finishing；Quenching cooling 40～60 minutes in the oil quenching bath that temperature is 100～150 DEG C, subsequently 200
～220 DEG C of tempering are incubated 8～10 hours, air cooling of coming out of the stove is to room temperature；
Step 5, Nitrizing Treatment: the Roll Collar surface after step 4 being processed carries out nitriding, is carried out continuously 2-3 time, every time
Nitriding temperature reduces by 5 DEG C.
This Roll Collar is carried out heat treatment, 800 DEG C preheat after, be heated separately to 1000 DEG C, 1050 DEG C, 1100 DEG C,
1180 DEG C, 1250 DEG C of oil quenchings；It is tempered 3 times 260 DEG C, 330 DEG C, 400 DEG C, 580 DEG C and 660 DEG C the most respectively, is tempered 1h every time.
Carry out wear testing by high temperature quick sliding abrasion tester, obtain wear extent X1.
Embodiment two
This Roll Collar is by hard phase 30%-40% and Binder Phase 60%-70%；Also include following making step:
Step one, material configures:
A hard phase includes WC75% and pottery 25%；
B Binder Phase includes the pig iron, ferrotungsten, vanadium iron, ferrochrome, ferronickel, molybdenum-iron, ferrosilicon and ferromanganese；
Wherein, Binder Phase is made up of the chemical composition of following weight percents: C 2.2%；W 1.5%；V 0.6%；Cr
21.0%；Mo 1.3%, Si 0.45%, Ni 0.20%, S ＜ 0.02%, P ＜ 0.02%, surplus is that Fe is with inevitable
Trace impurity；
Step 2, melting:
By the Hybrid Heating fusing in medium-frequency induction furnace of the Binder Phase in step one；Liquid steel temperature reaches 1630～1750
DEG C time, stop heating, room temperature stands after 10-20min, adds hard phase, heating, makes liquid steel temperature reach 1760～1780 DEG C
Time, stop heating, after room temperature stands 1-2h, come out of the stove into casting ladle；
Step 3, casts and processes: when liquid steel temperature is down to 1450～1470 DEG C, molten steel is poured into casting mold, is led
Defending roller blank, Roll Collar blank, after sand removal, going dead head to process, enters stove and is heated to 880～920 DEG C, after being incubated 4～6 hours,
Stove is cooled to air cooling after temperature is less than 500 DEG C and, to room temperature, then carries out roughing；
Step 4, heat treatment: continue to be heated to 1020～1050 DEG C into stove by the Roll Collar after processing, be incubated 2～4 hours
After, carry out machine finishing；Quenching cooling 40～60 minutes in the oil quenching bath that temperature is 100～150 DEG C, subsequently 200
～220 DEG C of tempering are incubated 8～10 hours, air cooling of coming out of the stove is to room temperature；
Step 5, Nitrizing Treatment: the Roll Collar surface after step 4 being processed carries out nitriding, is carried out continuously 2-3 time, every time
Nitriding temperature reduces by 5 DEG C.
This Roll Collar is carried out heat treatment, 800 DEG C preheat after, be heated separately to 1000 DEG C, 1050 DEG C, 1100 DEG C,
1180 DEG C, 1250 DEG C of oil quenchings；It is tempered 3 times 260 DEG C, 330 DEG C, 400 DEG C, 580 DEG C and 660 DEG C the most respectively, is tempered 1h every time.
Carry out wear testing by high temperature quick sliding abrasion tester, obtain wear extent X2.
Embodiment three
This Roll Collar is by hard phase 35% and Binder Phase 65%；Also include following making step:
Step one, material configures:
A hard phase includes WC79% and pottery 21%；
B Binder Phase includes the pig iron, ferrotungsten, vanadium iron, ferrochrome, ferronickel, molybdenum-iron, ferrosilicon and ferromanganese；
Wherein, Binder Phase is made up of the chemical composition of following weight percents: C 2.4%；W 2.0%；V 0.8%；Cr
25.0%；Mo 1.4%, Si 0.54%, Ni 0.24%, S ＜ 0.02%, P ＜ 0.02%, surplus is that Fe is with inevitable
Trace impurity；
Step 2, melting:
By the Hybrid Heating fusing in medium-frequency induction furnace of the Binder Phase in step one；Liquid steel temperature reaches 1630～1750
DEG C time, stop heating, room temperature stands after 10-20min, adds hard phase, heating, makes liquid steel temperature reach 1760～1780 DEG C
Time, stop heating, after room temperature stands 1-2h, come out of the stove into casting ladle；
Step 3, casts and processes: when liquid steel temperature is down to 1450～1470 DEG C, molten steel is poured into casting mold, is led
Defending roller blank, Roll Collar blank, after sand removal, going dead head to process, enters stove and is heated to 880～920 DEG C, after being incubated 4～6 hours,
Stove is cooled to air cooling after temperature is less than 500 DEG C and, to room temperature, then carries out roughing；
Step 4, heat treatment: continue to be heated to 1020～1050 DEG C into stove by the Roll Collar after processing, be incubated 2～4 hours
After, carry out machine finishing；Quenching cooling 40～60 minutes in the oil quenching bath that temperature is 100～150 DEG C, subsequently 200
～220 DEG C of tempering are incubated 8～10 hours, air cooling of coming out of the stove is to room temperature；
Step 5, Nitrizing Treatment: the Roll Collar surface after step 4 being processed carries out nitriding, is carried out continuously 2-3 time, every time
Nitriding temperature reduces by 5 DEG C.
This Roll Collar is carried out heat treatment, 800 DEG C preheat after, be heated separately to 1000 DEG C, 1050 DEG C, 1100 DEG C,
1180 DEG C, 1250 DEG C of oil quenchings；It is tempered 3 times 260 DEG C, 330 DEG C, 400 DEG C, 580 DEG C and 660 DEG C the most respectively, is tempered 1h every time.
Carry out wear testing by high temperature quick sliding abrasion tester, obtain wear extent X3, As time goes on, the mill of Roll Collar
The abrasion that damage amount is the most stable, has higher High-temperature-resandant andant wear-resistant performance.
In the description of this specification, the description of reference term " embodiment ", " example ", " concrete example " etc. means
Specific features, structure, material or feature in conjunction with this embodiment or example description is contained at least one enforcement of the present invention
In example or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.
And, the specific features of description, structure, material or feature can be to close in any one or more embodiments or example
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.Preferred embodiment is the most detailed
Describe all of details, be also not intended to the detailed description of the invention that this invention is only described.Obviously, according to the content of this specification,
Can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is to preferably explain the present invention
Principle and actual application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and four corner thereof and equivalent.
Claims (1)
1. a Roll Collar manufacture method based on WC hard alloy, it is characterised in that include hard phase 30%-40% and bonding
Phase 60%-70%；Also include following making step:
Step one, material configures:
A hard phase includes WC68%-79% and pottery 21%-32%；
B Binder Phase includes the pig iron, ferrotungsten, vanadium iron, ferrochrome, ferronickel, molybdenum-iron, ferrosilicon and ferromanganese；
Wherein, Binder Phase is made up of the chemical composition of following weight percents: C 1.9～2.4%；W 1.0～2.0%；V 0.4
～0.8%；Cr 18.5～25.0%；Mo 1.2～1.4%, Si 0.37～0.54%, Ni 0.17～0.24%, S ＜
0.02%, P ＜ 0.02%, surplus is Fe and inevitable trace impurity；
Step 2, melting:
By the Hybrid Heating fusing in medium-frequency induction furnace of the Binder Phase in step one；Liquid steel temperature reaches 1630～1750 DEG C
Time, stop heating, after room temperature stands 10-20min, add hard phase, heat, when making liquid steel temperature reach 1760～1780 DEG C,
Stop heating, after room temperature stands 1-2h, come out of the stove into casting ladle；
Step 3, casts and processes: when liquid steel temperature is down to 1450～1470 DEG C, molten steel is poured into casting mold, obtains Roll Collar
Blank, Roll Collar blank, after sand removal, going dead head to process, enters stove and is heated to 880～920 DEG C, and after being incubated 4～6 hours, stove is cold
After being less than 500 DEG C to temperature, air cooling is to room temperature, then carries out roughing；
Step 4, heat treatment: continue to be heated to 1020～1050 DEG C into stove by the Roll Collar after processing, after being incubated 2～4 hours,
Carry out machine finishing；Quenching cooling 40～60 minutes in the oil quenching bath that temperature is 100～150 DEG C, subsequently 200～
220 DEG C of tempering are incubated 8～10 hours, and air cooling of coming out of the stove is to room temperature；
Step 5, Nitrizing Treatment: the Roll Collar surface after step 4 being processed carries out nitriding, is carried out continuously 2-3 time, each nitriding
Temperature reduces by 5 DEG C.
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| CN106694580A (en) * | 2017-03-04 | 2017-05-24 | 镇江润博表面工程处理有限公司 | Nickel-chromium-molybdenum based WC40 steel bond hard alloy guide roller and manufacturing method thereof |
| CN106694583A (en) * | 2017-03-04 | 2017-05-24 | 丹阳嘉伟耐磨材料科技有限公司 | High-boron low-alloy high-speed steel base WC40 steel-bonded hard alloy guide and guard roller and manufacturing method thereof |
| CN106694578A (en) * | 2017-03-04 | 2017-05-24 | 镇江百睿特增材科技有限公司 | Nickel chromium steel base WC steel-bonded hard alloy guide and guard roller and manufacturing method thereof |
| CN106694579A (en) * | 2017-03-04 | 2017-05-24 | 丹阳嘉伟耐磨材料科技有限公司 | High manganese steel base WC steel-bonded hard alloy guide and guard roller and manufacturing method thereof |
| CN106694577A (en) * | 2017-03-04 | 2017-05-24 | 镇江润博表面工程处理有限公司 | Medium carbon nickel-chrome steel based WC50 steel bond hard alloy guide roller and manufacturing method thereof |
| CN106694582A (en) * | 2017-03-04 | 2017-05-24 | 丹阳嘉伟耐磨材料科技有限公司 | Chromium-nickel-molybdenum alloy cast iron base WC50 steel-bonded hard alloy guide and guard roller and manufacturing method thereof |
| CN106694581A (en) * | 2017-03-04 | 2017-05-24 | 丹阳嘉伟耐磨材料科技有限公司 | Low carbon chromium-molybdenum steel based WC50 steel bond hard alloy guide roller and manufacturing method thereof |
| CN106825073A (en) * | 2017-03-04 | 2017-06-13 | 丹阳嘉伟耐磨材料科技有限公司 | A kind of modified high manganese steel base WC steel bonded carbide Roll Collar and its manufacture method |
| CN106825074A (en) * | 2017-03-04 | 2017-06-13 | 丹阳嘉伟耐磨材料科技有限公司 | A kind of high-speed steel-base WC45 steel bonded carbide Roll Collar and its manufacture method |
| CN108842039A (en) * | 2018-08-13 | 2018-11-20 | 林州凤宝管业有限公司 | A kind of Roll Collar production method based on WC hard alloy |
| WO2020051722A1 (en) * | 2018-09-13 | 2020-03-19 | 安徽霍山科皖特种铸造有限责任公司 | Metallurgical material and method for fabricating metallurgical guide part using same |
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|---|---|---|---|---|
| CN106694580A (en) * | 2017-03-04 | 2017-05-24 | 镇江润博表面工程处理有限公司 | Nickel-chromium-molybdenum based WC40 steel bond hard alloy guide roller and manufacturing method thereof |
| CN106694583A (en) * | 2017-03-04 | 2017-05-24 | 丹阳嘉伟耐磨材料科技有限公司 | High-boron low-alloy high-speed steel base WC40 steel-bonded hard alloy guide and guard roller and manufacturing method thereof |
| CN106694578A (en) * | 2017-03-04 | 2017-05-24 | 镇江百睿特增材科技有限公司 | Nickel chromium steel base WC steel-bonded hard alloy guide and guard roller and manufacturing method thereof |
| CN106694579A (en) * | 2017-03-04 | 2017-05-24 | 丹阳嘉伟耐磨材料科技有限公司 | High manganese steel base WC steel-bonded hard alloy guide and guard roller and manufacturing method thereof |
| CN106694577A (en) * | 2017-03-04 | 2017-05-24 | 镇江润博表面工程处理有限公司 | Medium carbon nickel-chrome steel based WC50 steel bond hard alloy guide roller and manufacturing method thereof |
| CN106694582A (en) * | 2017-03-04 | 2017-05-24 | 丹阳嘉伟耐磨材料科技有限公司 | Chromium-nickel-molybdenum alloy cast iron base WC50 steel-bonded hard alloy guide and guard roller and manufacturing method thereof |
| CN106694581A (en) * | 2017-03-04 | 2017-05-24 | 丹阳嘉伟耐磨材料科技有限公司 | Low carbon chromium-molybdenum steel based WC50 steel bond hard alloy guide roller and manufacturing method thereof |
| CN106825073A (en) * | 2017-03-04 | 2017-06-13 | 丹阳嘉伟耐磨材料科技有限公司 | A kind of modified high manganese steel base WC steel bonded carbide Roll Collar and its manufacture method |
| CN106825074A (en) * | 2017-03-04 | 2017-06-13 | 丹阳嘉伟耐磨材料科技有限公司 | A kind of high-speed steel-base WC45 steel bonded carbide Roll Collar and its manufacture method |
| CN108842039A (en) * | 2018-08-13 | 2018-11-20 | 林州凤宝管业有限公司 | A kind of Roll Collar production method based on WC hard alloy |
| WO2020051722A1 (en) * | 2018-09-13 | 2020-03-19 | 安徽霍山科皖特种铸造有限责任公司 | Metallurgical material and method for fabricating metallurgical guide part using same |
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