CN102485926A - Nickel-chromium alloy with wear resistance and high temperature resistance and its production method - Google Patents
Nickel-chromium alloy with wear resistance and high temperature resistance and its production method Download PDFInfo
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- CN102485926A CN102485926A CN2010105760474A CN201010576047A CN102485926A CN 102485926 A CN102485926 A CN 102485926A CN 2010105760474 A CN2010105760474 A CN 2010105760474A CN 201010576047 A CN201010576047 A CN 201010576047A CN 102485926 A CN102485926 A CN 102485926A
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Abstract
The invention provides a high aluminum nickel-chromium alloy with wear resistance, high temperature resistance, good tensile strength and yield strength and its production method, The nickel-chromium alloy comprises the following components by weight percentage: 0-0.1% of C, 0-0.5% of Si, 0-1.0% of Mn, 0-0.015% of S, 0.5-1.5% of W, 15-20% of Cr, 63-70% of Ni, 1.8-2.5% of Al, 0-0.8% of Cu and the balance of Fe. The method comprises the following steps: burdening according to the above alloy components and smelting, refining three times, heating to the temperature of 900-1200 DEG C, insulating for 10-40 minutes and forging; cold processing and water cooling. The nickel-chromium alloy has the advantages of raised high temperature resistance of the alloy, good tensile strength and yield strength, and good comprehensive profit, the production method solves the problems of alloy smelting and heat treatment, and the purity of the product can be enhanced.
Description
Technical field
The present invention relates to a kind of pyrolic alloy material and method of manufacture thereof, especially a kind of wear-resisting and tensile strength and high Wear-resistant, high-temperature resistant pyrolic alloy and the method for manufacture thereof of ys.
Background technology
At present; Can reach between 1300 ℃～1360 ℃ though some high temperature materials are high temperature resistant; But do mud net, chemical filler net in its production petroleum industry, when materials such as strainer are done in chemical industry and chemical fiber industry; Because its wear resisting property, tensile strength and ys are not high, not because the fragility frangible, exactly because surface cracking or waviness is arranged.And the resistance to elevated temperatures of common high temperature alloy material such as materials such as CH1040, CH3030 is not enough, can only under the temperature between 600 ℃～1200 ℃, work, and the time is not long, high temperature resistant, scale resistance is all not enough.Resistances to elevated temperatures such as at present common pyrolic alloy material such as 2Crl 3Ni l 3,2Cr l 5Ni 20, iCr l 6Ni 25 are all not ideal enough, even if the top temperature of a series of its uses of high-resistance electrothermic alloy such as Cr2 ONi S O also can only reach 1300 ℃.Therefore, when material require uses, as when being applied to petroleum industry and doing mud net, chemical filler net, chemical industry and chemical fiber industry and do among the strainer, will bring many problems under high-temperature condition more than 1200 ℃.
Summary of the invention
Problem to be solved by this invention provides a kind ofly has stronger wear resisting property, and fine tensile strength and ys are arranged, and has higher melt can tolerate pyritous Wear-resistant, high-temperature resistant pyrolic alloy material and system method thereof more than 1300 ℃ for a long time simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention adopted is: a kind of Wear-resistant, high-temperature resistant pyrolic alloy, form by the weight percent of following composition basically: C:0～0.1; Si:0～0.5, Mn:0～1.0, S:0～0.015; W:0.5%～1.5%, Cr:15～20, Ni:63～70; Al:1.8～2.5, Cu:0～0.8, Fe is a surplus.
Adopt above technical scheme, compare with existing common pyrolic alloy, remarkable advantage of the present invention is:
1, over-all properties is obviously improved.Repeatedly make up the adjustment test through the conventional products prescription, the present invention courageously adjusts proportioning, and breaking the normal procedure increases aluminium, copper content; Added tungsten; Make alloy material metallographic structure be improved significantly, taken into account intensity and wear resistance simultaneously, made the wear resistance of product increase by 5.1%, tensile strength is big to have increased by 40%; Ys has increased by 35%, and elongation has increased by 35%.
2, resistance to elevated temperatures obviously strengthens.Through the adjustment proportioning, the tensile strength of product and ys, high temperature resistant, oxidation resistent susceptibility obviously are improved, and its tensile strength reaches 800, and ys 395 is considerably beyond the tensile strength and the ys of general high temperature material.Moreover, its fusing point also can surpass 1300 ℃, can also be operated in for a long time under 1300 ℃～1360 ℃ the high temperature.
3, cost benefit is higher.Through the adjustment of proportioning, product price of the present invention is higher than common pyrolic alloy material, but because it has improved the resistance to elevated temperatures of product greatly; Its over-all properties has also obtained obvious improvement; Product specification has been significantly improved thereupon, and by contrast, its cost has still reduced.
Concrete principle of the present invention is:
Chromium (Cr) can significantly improve intensity, hardness, wear resistance, oxidation-resistance, erosion resistance; Can be used as the important alloying element of high temperature alloy material; But chromium also has the plasticity of reduction and flexible deficiency simultaneously; So also too much unsuitable, the present invention is controlled at weight of chromium per-cent between 15%～20%.
Nickel (Ni) has good formability; Can strengthen intensity, plasticity and the toughness of alloy material, soda acid is also had higher corrosion resistance, at high temperature have antirust and temperature capacity; But because nickel is more rare resource; Price is higher, and nickel is also too much unsuitable, so the present invention is controlled at weight of chromium per-cent between 63%～70%.
Tungsten (W) has over-all propertieies such as high firmness, HS, high-fatigue strength, makes its wear resisting property preeminent.It can use under many bad working environments, and is higher than rapid steel (W6Mo5Cr4V2), hot-work die steel work-ing life.The present invention is controlled at weight of chromium per-cent between 0.5%～1.5%.
Aluminium (Al) does not have only 660 ℃ because of its fusing point is high; So generally when making high temperature material, seldom add aluminium; Generally can not surpass 1% even if add its content yet; But the present invention considers aluminium and has ductility, oxidation-resistance and corrosion resistance preferably, and aluminium and chromium, silicon share the high temperature non-scale performance that also can significantly improve alloy material and the ability of high-temperature corrosion resistance, so the present invention is controlled at the aluminium weight percent between 1.8%～2.5%.
The intensity and the toughness that add affiliation raising alloy material of copper (Cu) element; Atomospheric corrosion performance particularly; Shortcoming is when hot-work, to be easy to generate hot-shortly, reduces the mechanical property of alloy material, so the present invention is controlled at greater than 0 weight of copper per-cent less than between 0.8%.
Manganese (Mn) is good reductor and sweetening agent, can improve the hot workability of alloy material, but can not be too much, gets final product so the present invention is no more than 1% with the control of manganese weight percent.
Sulphur (S) is harmful element under normal conditions; Be prone to make alloy material to produce red brittleness; Reduce ductility, toughness, the erosion resistance of alloy material; Be prone to cause crackle when rolling forging, generally in pyrolic alloy as the impurity existence, so the present invention is controlled at the sulphur weight percent under 0.015%.
Silicon (Si) can improve elastic limit, yield-point and the tensile strength of alloy; Its with chromium combine also can improve material erosion resistance and oxidation resistant performance; But generally in pyrolic alloy, exist, be no more than 0.5% so the present invention is controlled at the silicon weight percent as impurity.
Carbon (C) generally exists as impurity in pyrolic alloy; The carbon content increase can make yield-point and tensile strength raise; But plasticity and impact reduce, and meet the requirements in order to guarantee performance of the present invention, are no more than 0.1% so the present invention is controlled at the carbon weight percent.
Because the product composition proportioning is adjusted among the present invention, add tungsten and strengthened the consumption of aluminium, traditional existing pyrolic alloy method of manufacture is improved, comprise the steps: the first step, after preparing burden by above-mentioned alloying constituent, smelt; In second step, carry out secondary refining; The 3rd step, carry out hot-work, be heated to 900 ℃～1200 ℃ earlier, be incubated 10～140 minutes; In the 4th step, add the aluminium refining once more; The 5th step, carry out hot-work again, be heated to 700 ℃～1000 ℃, be incubated and forge after 60～150 minutes; In the 6th step, carry out cold working; In the 7th step, carry out water cooling.
After having adopted above-mentioned method of manufacture; Compare with traditional method and to have following remarkable advantage: the one, in technical process, break the normal procedure and adopted repeatedly melting; Change its metallographic structure, its mechanics, chemistry, thermal property are improved, product gas purity is improved.The 2nd, adopt the higher sometimes phenomenon on the low side of temperature when heating the mode that afterwards is incubated earlier and having overcome Forge Heating, rimose problem when having solved the heat forged that occurs in the product process.The 3rd, change and commonly used air-cooledly slowed down speed of cooling for water-cooled, solved the serious wave-like that occurs easily in the last heat treatment process.
Embodiment
Further specify the present invention through embodiment below.
Embodiment 1: the high-temperature resistant nickel-chrome alloy prescription consists of: C:0.1 (weight percent, down together), and Si:0.5, Mn:1.0, W:0.4, S:0.014, Cr:21, Ni:58, Al:1.8, Cu:0.01, Fe are surplus.
After preparing burden by above-mentioned alloying constituent, smelt; In second step, carry out secondary refining; The 3rd step, carry out hot-work, be heated to 900 ℃ earlier, be incubated 40 minutes; In the 4th step, add the aluminium refining once more; The 5th step, carry out hot-work again, be heated to 700 ℃, be incubated and forge after 60 minutes; In the 6th step, carry out cold working; In the 7th step, carry out water cooling.
Embodiment 2: the high-temperature resistant nickel-chrome alloy prescription consists of: c:0.08 (weight percent, down together), and Si:0.5, Mn:1.0, W:0.8, S:0.014, Cr:25, Ni:63, Al:2.5, Cu:0.69, Fe are surplus.
After preparing burden by above-mentioned alloying constituent, smelt; In second step, carry out secondary refining; The 3rd step, carry out hot-work, be heated to 1200 ℃ earlier, be incubated 10 minutes; In the 4th step, add the aluminium refining once more; The 5th step, carry out hot-work again, be heated to 1000 ℃, be incubated and forge after 150 minutes; In the 6th step, carry out cold working; In the 7th step, carry out water cooling.
Embodiment 3: the high-temperature resistant nickel-chrome alloy prescription consists of: C:0.05 (weight percent, down together), and Si:0.1, Mn:0.3,, W:1.2S:0.008, Cr:23, Ni:60, Al:2.0, Cu:0.5, Fe are surplus.
After preparing burden by above-mentioned alloying constituent, smelt; In second step, carry out secondary refining; In second step, carry out secondary refining; The 3rd step, carry out hot-work, be heated to 950 ℃ earlier, be incubated 50 minutes; In the 4th step, add the aluminium refining once more; The 5th step, carry out hot-work again, be heated to 900 ℃, be incubated and forge after 105 minutes; In the 6th step, carry out cold working; In the 7th step, carry out water cooling.
Embodiment 4: the high-temperature resistant nickel-chrome alloy prescription consists of: c:0.01 (weight percent, down together), and Si:0.01, Mn:0.01, W:1.5S:0.005, Cr:24, Ni:62, Al:2.2, Cu:0.1, Fe are surplus.
After preparing burden by above-mentioned alloying constituent, smelt; In second step, carry out secondary refining; The 3rd step, carry out hot-work, be heated to 1050 ℃ earlier, be incubated 20 minutes; In the 4th step, add the aluminium refining once more; The 5th step, carry out hot-work again, be heated to 1000 ℃, be incubated and forge after 90 minutes; In the 6th step, carry out cold working; In the 7th step, carry out water cooling.
Claims (2)
1. a Wear-resistant, high-temperature resistant pyrolic alloy is made up of the weight percent of following composition: C:0～0.1, Si:0～0.5, Mn:0～1.0 basically; S:0～0.015, W:0.5%～1.5%, Cr:15～20, Ni:63～70; Al:1.8～2.5, Cu:0～0.8, Fe is a surplus.
2. a method of making the described Wear-resistant, high-temperature resistant pyrolic alloy of claim 1 comprises the steps:
The first step is smelted by the above-mentioned alloying constituent back of preparing burden;
In second step, carry out secondary refining;
The 3rd step, carry out hot-work, be heated to 900 ℃～1200 ℃ earlier, be incubated 10～140 minutes;
In the 4th step, add the aluminium refining once more;
The 5th step, carry out hot-work again, be heated to 700 ℃～1000 ℃, be incubated and forge after 60～150 minutes;
In the 6th step, carry out cold working;
In the 7th step, carry out water cooling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105760474A CN102485926A (en) | 2010-12-04 | 2010-12-04 | Nickel-chromium alloy with wear resistance and high temperature resistance and its production method |
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| CN2010105760474A CN102485926A (en) | 2010-12-04 | 2010-12-04 | Nickel-chromium alloy with wear resistance and high temperature resistance and its production method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630563A (en) * | 2015-02-10 | 2015-05-20 | 苏州市神龙门窗有限公司 | Zinc-nickel alloy coating for door and window and thermal treatment process of zinc-nickel alloy coating |
| CN104962831A (en) * | 2015-07-14 | 2015-10-07 | 上海胜桀精密机械科技有限公司 | Hot-working steel powder alloy material |
-
2010
- 2010-12-04 CN CN2010105760474A patent/CN102485926A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630563A (en) * | 2015-02-10 | 2015-05-20 | 苏州市神龙门窗有限公司 | Zinc-nickel alloy coating for door and window and thermal treatment process of zinc-nickel alloy coating |
| CN104962831A (en) * | 2015-07-14 | 2015-10-07 | 上海胜桀精密机械科技有限公司 | Hot-working steel powder alloy material |
| CN104962831B (en) * | 2015-07-14 | 2017-06-30 | 上海胜桀精密机械科技有限公司 | A kind of hot-work steel powder alloy material |
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Application publication date: 20120606 |