CN104694725A - Manufacturing technique for ultra-high strength super-wear resistant chain - Google Patents
Manufacturing technique for ultra-high strength super-wear resistant chain Download PDFInfo
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- CN104694725A CN104694725A CN201510112816.8A CN201510112816A CN104694725A CN 104694725 A CN104694725 A CN 104694725A CN 201510112816 A CN201510112816 A CN 201510112816A CN 104694725 A CN104694725 A CN 104694725A
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Abstract
The invention relates to a manufacturing technique for an ultra-high strength super-wear resistant chain. The manufacturing technique for the ultra-high strength super-wear resistant chain includes steps that (1) using alloy steel as manufacturing material for a submerged chain conveyor chain and a barking chain; (2) carrying out sub-critical (Ac1-Ac3) quenching on the chain processed from said material; (3) placing the quenched chain in a nitriding furnace, and nitriding for 10 to 13 hours at 450 to 600 degrees centigrade; (4) cooling the nitrided chain to the room temperature in the nitriding furnace; (5) heating the cooled chain at 450 to 600 degrees centigrade through an electric box furnace, and cooling quickly. By means of the manufacturing technique for the ultra-high strength super-wear resistant chain, both the breaking stress and wearing resistance of the chain are greatly improved.
Description
Technical field
The present invention relates to a kind of manufacturing process of chain, especially a kind of manufacturing process of superstrength super abrasive chain.
Background technology
Dragveyer chain for dragveyer and the mining such as the bark chain for peeling machine and coal conveying chain all need chain both to have high wear resistance, have again high intensity.But the carbonitriding technology adopted with regard to current chain industry or independent carburization process, all can not meet requirement that is strong to superelevation and super abrasive well simultaneously.When meeting wear resistance and require, intensity just can not meet requirement; When meeting requirement of strength, hardness will decline to a great extent.In addition, carbonitriding technology and independent carburization process thermal treatment temp high, energy consumption is many, and production cost is high, is also unfavorable for energy-saving and emission-reduction.
Summary of the invention
The object of the invention is to meet the requirement of chain to superstrength and super abrasive performance for overcoming existing Technology simultaneously, the manufacturing process of the reliable super high-strength ultra wear-resistant chain of relatively economical again of a kind of manufacturing process is provided.
For achieving the above object, the present invention adopts following technical proposals:
A manufacturing process for superstrength super abrasive chain, comprises the following steps:
(1) select the quenched and tempered steel containing the metallic element that can prevent temper brittleness as the manufactured materials of dragveyer chain and bark chain;
(2) chain be shaped with above-mentioned materials processing is carried out Ya Wen (Ac1 ~ Ac3) quenching;
(3) chain after quenching is put into ion nitriding furnace, carry out the ion Plasma Nitriding Treatment of 10-13h at 450-600 DEG C;
(4) chain after ion Plasma Nitriding Treatment is cooled to room temperature in ion nitriding furnace;
(5) cooled chain heats at 450-600 DEG C with cabinet-type electric furnace again, and heat-up time is 1-2h, then cools fast.
Preferably, the described metallic element of temper brittleness that can prevent is Mo or W.
Preferably, the Heating temperature in step (3) is 450 DEG C.
Preferably, the heat-up time in step (3) is 12h.
Preferably, in described step (4), by passing into high pure nitrogen, chain is cooled fast.
Preferably, in described step (4), by passing into high-purity argon gas, chain is cooled fast.
Preferably, in described step (4), chain naturally cools to room temperature with ion nitriding furnace.
Preferably, in described step (5), Heating temperature is 450 DEG C, and heat-up time is 1.5h.
Preferably, in described step (5), water or oil is used to cool fast chain.
If ion nitriding furnace possesses the ability that logical high pure nitrogen or high-purity argon gas carry out cooling fast, just lead to high pure nitrogen with stove or high-purity argon gas cools fast to chain in stove; If ion nitriding furnace does not possess the ability that logical high pure nitrogen or high-purity argon gas carry out cooling fast, in stove chain that with regard to furnace cooling to room temperature.
The combination of step (2) and step (4) or step (5) significantly improves the intensity of chain, and step (3) significantly improves the wear resistance of chain.
Beneficial effect of the present invention:
1., compared with existing high-strength, high-anti-friction E level chain, intensity significantly improves, and breaking stress can by 630N/mm
2bring up to 1500N/mm
2.
2., compared with existing high-strength, high-anti-friction E level chain, wear resistance also significantly improves, and surface hardness can bring up to 800HV by 466HV.
3., compared with the ST80 level chain of carbonitriding, when surface hardness is all 800HV, the breaking stress of the chain that the application obtains is 1500N/mm
2, its breaking stress is far longer than the 420N/mm of ST80 level K4 series
2.
4. the temperature of carbonitriding is 930-950 DEG C, and the temperature of ion nitriding just 450 DEG C, the required time is all 12 hours, so compared with carbonitriding technology, the application is more energy-conservation.
Therefore, the present invention has high development and application values for practical application.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1:
A manufacturing process for super high-strength ultra wear-resistant chain, comprises the following steps:
The first step selects 45CrNiMoVA as the manufactured materials of dragveyer chain and bark chain;
The chain be shaped with above-mentioned materials processing is carried out Ya Wen (A1 ~ A3) quenching by second step;
Chain after quenching is put into ion nitriding furnace by the 3rd step, carries out 12h ion Plasma Nitriding Treatment at 450 DEG C;
If the 4th step ion nitriding furnace possesses the ability that logical high pure nitrogen or high-purity argon gas carry out cooling fast, just lead to high pure nitrogen with stove or high-purity argon gas cools fast to chain; If ion nitriding furnace does not possess logical high pure nitrogen or high-purity argon gas carries out the quick ability cooled, in stove, chain is just with ion nitriding furnace cool to room temperature.And then heat at 450 DEG C with cabinet-type electric furnace, heating 1.5h, use water or oil to cool fast.
The breaking stress of the chain obtained by embodiment 1 is 1500N/mm
2, surface hardness is 800HV.
Embodiment 2
A manufacturing process for super high-strength ultra wear-resistant chain, comprises the following steps:
The first step selects 45CrNiMoVA as the manufactured materials of dragveyer chain and bark chain;
The chain be shaped with above-mentioned materials processing is carried out Ya Wen (A1 ~ A3) quenching by second step;
Chain after quenching is put into ion nitriding furnace by the 3rd step, carries out 12.5h ion Plasma Nitriding Treatment at 455 DEG C;
If the 4th step ion nitriding furnace possesses the ability that logical high pure nitrogen or high-purity argon gas carry out cooling fast, just lead to high pure nitrogen with stove or high-purity argon gas cools fast to chain; If ion nitriding furnace does not possess logical high pure nitrogen or high-purity argon gas carries out the quick ability cooled, in stove, chain is just with ion nitriding furnace cool to room temperature.And then heat at 455 DEG C with cabinet-type electric furnace, use water or oil to cool fast.
The breaking stress of the chain obtained by embodiment 2 is 1420N/mm
2, surface hardness is 750HV.
Embodiment 3
A manufacturing process for super high-strength ultra wear-resistant chain, comprises the following steps:
The first step selects 45CrNiMoVA as the manufactured materials of dragveyer chain and bark chain;
The chain be shaped with above-mentioned materials processing is carried out Ya Wen (A1 ~ A3) quenching by second step;
Chain after quenching is put into ion nitriding furnace by the 3rd step, carries out 13h ion Plasma Nitriding Treatment at 460 DEG C;
If the 4th step ion nitriding furnace possesses the ability that logical high pure nitrogen or high-purity argon gas carry out cooling fast, just lead to high pure nitrogen with stove or high-purity argon gas cools fast to chain; If ion nitriding furnace does not possess logical high pure nitrogen or high-purity argon gas carries out the quick ability cooled, in stove, chain is just with ion nitriding furnace cool to room temperature.And then heat at 460 DEG C with cabinet-type electric furnace, use water or oil to cool fast.
The breaking stress of the chain obtained by embodiment 3 is 1370N/mm
2, surface hardness is 760HV.
Although foregoing is described the specific embodiment of the present invention; but not limiting the scope of the invention; those skilled in the art should be understood that; on the basis of technical scheme of the present invention; those skilled in the art does not need to pay the various amendment or distortion that creative work can make, but it is still within protection scope of the present invention.
Claims (10)
1. a manufacturing process for superstrength super abrasive chain, comprises the following steps:
(1) select the quenched and tempered steel containing the metallic element that can prevent temper brittleness as the manufactured materials of dragveyer chain and bark chain;
(2) chain be shaped with above-mentioned materials processing is carried out intercritical hardening;
(3) chain after quenching is put into ion nitriding furnace, carry out the ion Plasma Nitriding Treatment of 10-13h at 450-600 DEG C;
(4) chain after ion Plasma Nitriding Treatment is cooled to room temperature in ion nitriding furnace;
(5) cooled chain heats at 450-600 DEG C with cabinet-type electric furnace again, and heat-up time is 1-2h, then cools fast.
2. manufacturing process according to claim 1, is characterized in that: the described metallic element of temper brittleness that can prevent is Mo or W.
3. manufacturing process according to claim 1, is characterized in that: described quenched and tempered steel is 45CrNiMoVA.
4. manufacturing process according to claim 1, is characterized in that: the Heating temperature in step (3) is 450 DEG C.
5. manufacturing process according to claim 1, is characterized in that: the heat-up time in step (3) is 12h.
6. manufacturing process according to claim 1, is characterized in that: in described step (4), is quickly cooled to room temperature by passing into high pure nitrogen to chain.
7. manufacturing process according to claim 1, is characterized in that: in described step (4), is quickly cooled to room temperature by passing into high-purity argon gas to chain.
8. manufacturing process according to claim 1, is characterized in that: in described step (4), chain naturally cools to room temperature with ion nitriding furnace.
9. manufacturing process according to claim 1, is characterized in that: in described step (5), and Heating temperature is 450 DEG C, and heat-up time is 1.5h.
10. manufacturing process according to claim 1, is characterized in that: in described step (5), uses water or oil to cool fast chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510112816.8A CN104694725B (en) | 2015-03-13 | 2015-03-13 | A kind of manufacturing process of superhigh intensity super abrasive chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510112816.8A CN104694725B (en) | 2015-03-13 | 2015-03-13 | A kind of manufacturing process of superhigh intensity super abrasive chain |
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| Publication Number | Publication Date |
|---|---|
| CN104694725A true CN104694725A (en) | 2015-06-10 |
| CN104694725B CN104694725B (en) | 2017-03-15 |
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| CN201510112816.8A Expired - Fee Related CN104694725B (en) | 2015-03-13 | 2015-03-13 | A kind of manufacturing process of superhigh intensity super abrasive chain |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041008A (en) * | 1988-09-03 | 1990-04-04 | 哈尔滨工业大学 | Projectile shuttle Metallic Materials and Heat Treatment reinforcing process |
| CN1393303A (en) * | 2001-06-29 | 2003-01-29 | 宣碧华 | Method for manufacturing chain |
| KR100862217B1 (en) * | 2007-03-23 | 2008-10-09 | 동아대학교 산학협력단 | Method for manufacturing high corrosion-resistant and high wear- resistant steel materials by 2 step gas nitriding or gas nitrocarburizing |
| CN101855370A (en) * | 2007-11-14 | 2010-10-06 | Ntn株式会社 | Method of heat-treating steel, process for producing machine part, and machine part |
-
2015
- 2015-03-13 CN CN201510112816.8A patent/CN104694725B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041008A (en) * | 1988-09-03 | 1990-04-04 | 哈尔滨工业大学 | Projectile shuttle Metallic Materials and Heat Treatment reinforcing process |
| CN1393303A (en) * | 2001-06-29 | 2003-01-29 | 宣碧华 | Method for manufacturing chain |
| KR100862217B1 (en) * | 2007-03-23 | 2008-10-09 | 동아대학교 산학협력단 | Method for manufacturing high corrosion-resistant and high wear- resistant steel materials by 2 step gas nitriding or gas nitrocarburizing |
| CN101855370A (en) * | 2007-11-14 | 2010-10-06 | Ntn株式会社 | Method of heat-treating steel, process for producing machine part, and machine part |
Non-Patent Citations (1)
| Title |
|---|
| 朱中平: "《中外钢号对照手册》", 31 January 2011, 化学工业出版社 * |
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| CN104694725B (en) | 2017-03-15 |
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