CN104233137A - Deformation and thermal treatment technology of nichrome alloy - Google Patents
Deformation and thermal treatment technology of nichrome alloy Download PDFInfo
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- CN104233137A CN104233137A CN201410428143.2A CN201410428143A CN104233137A CN 104233137 A CN104233137 A CN 104233137A CN 201410428143 A CN201410428143 A CN 201410428143A CN 104233137 A CN104233137 A CN 104233137A
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Abstract
The invention relates to a processing technology of an electrothermal alloy material, and particularly relates to a deformation and thermal treatment technology of nichrome alloy. The technology comprises the following steps: (1) homogenizing annealing; (2) forging; (3) hot rolling of a wire rod; (4) solution treatment; (5) multi-pass wire drawing; and (6) stress relief annealing, wherein the multi-pass wire drawing refers to three-pass wire drawing, in the first wire drawing, a solution-treated wire rod with 12-15mm is processed until the diameter is 8-9mm, in the second wire drawing, the wire rod is processed until the diameter is 4-5mm, and in the third wire drawing, the wire rod is processed until the diameter is 2-3mm. The prepared finished material has excellent mechanical performance and service life, overcomes the deficiencies of the prior art, and has great industrial application prospects.
Description
Technical field:
The present invention relates to distortion and the thermal treatment process of a kind of complete processing of electrical heating alloys material, particularly a kind of nichrome.
Background technology:
Cr20Ni80 is a kind of important electrical heating alloys, have that uniform resistivity is stablized, fusing point is high, thermal expansivity is low, the advantage such as high antioxidant and good hot strength, processing forming and weldability, the advantage used under having the high-temperature mechanics condition that other classification electrical heating alloys do not possess, be the focus material of recent researches, widely use in electrical equipment and industrial furnace.With regard to domestic nickel chromium triangle system electrical heating alloys product, its work-ing life and quality still have larger gap compared with imported product, the life-span of such as domestic nichrome wire is generally 2000h, the life-span of imported product can reach 7000h, and mechanical property (comprising tensile strength, unit elongation etc.) with also have sizable gap abroad.The present invention is by further optimization processing technology, and particularly distortion and thermal treatment process, improve the mechanical property of nichrome, work-ing life.
Summary of the invention:
The object of the invention is to overcome deficiency of the prior art, a kind of distortion and the thermal treatment process that effectively can improve nichrome mechanical property and work-ing life are provided.
The distortion of nichrome and thermal treatment process, described technique comprises: (1) homogenizing annealing, (2) forging, (3) gren rod, (4) solution treatment, (5) multi-pass wire drawing and (6) stress relief annealing, it is characterized in that, described multi-pass wire drawing is specially three passage wire drawings, 12-15mm silk material after solution treatment is worked into diameter 8-9mm by first time wire drawing, second time Wire Drawing is to diameter 4-5mm, and third time, Wire Drawing was to diameter 2-3mm.
Described homogenizing annealing be specially the ingot casting after by melting in the heat treatment furnace of 950 DEG C, be incubated 16 hours after furnace cooling.
Described forging is specially the ingot casting after by homogenizing annealing and puts into isothermal forging machine and forge, and forging temperature is 1050 DEG C, obtains the square billet of length of side 50mm, oil quenching after forging.
Described gren rod is specially the sample after by forging and carries out gren rod, hot-rolled temperature: 1050 DEG C-1150 DEG C, and every time deflection≤15%, obtains the silk material of 12-15mm.
Described solution treatment is specially the silk material after by gren rod and carries out solution treatment in 1000 DEG C, 5 hours.
Described stress relief annealing is specially carries out 500 DEG C, 12 hours stress relief annealings by product after multi-pass wire drawing.
Elementary composition and the proportioning of described nichrome is: C:0.1-0.2%, Si:0.1-0.2%, Cr:25-26%, Fe:3-5%, A1:2-4%, Sn:5-6%, Ge:2-3%, Ce:0.01-0.02%, B:0.05-0.1%, S≤0.0001%, P≤0.0001%, and surplus is nickel and inevitable impurity.
The present invention, by optimizing distortion and the thermal treatment process of nichrome further, effectively carries heavy alloyed mechanical property and work-ing life.Three passage wire drawings can effectively be enhanced productivity, and fully reach the effect of reinforcement fibre material; Solution treatment and stress relief annealing can be optimized morphology of carbides, reduce the negative effect of inclusion alloy matrix, fully discharge silk material internal stress, thus improve work-ing life.In addition, adding Rare-Earth Ce can purify alloy substrate, improves inclusion pattern, crystal grain thinning, and the oxygen enrichment particle simultaneously formed at grain boundaries can be formed dislocation glide and hinder, thus improves alloy strength; Trace B adds for improving alloy plasticity and processing characteristics has vital role; Heavy alloyed high temperature resistance oxidation-resistance and resistivity effectively can be put forward by adding Cr, Fe, Al, Sn, Ge element.Test shows, nichrome tensile strength of the present invention improves at least 30%, 1200 DEG C of quick life values than Cr20Ni80 and improves at least 60%.
Embodiment:
Set forth further below by embodiment and understand the present invention.
The distortion of nichrome and thermal treatment process, described technique comprises:
(1) homogenizing annealing, furnace cooling after ingot casting after melting is incubated 16 hours in the heat treatment furnace of 950 DEG C, elementary composition and the proportioning of nichrome ingot casting is: C:0.16%, Si:0.13%, Cr:25.8%, Fe:4%, Al:3%, Sn:5.7%, Ge:2.8%, Ce:0.015%, B:0.07%, S≤0.0001%, P≤0.0001%, and surplus is nickel and inevitable impurity;
(2) forge, the ingot casting after homogenizing annealing is put into isothermal forging machine and forges, forging temperature is 1050 DEG C, obtains the square billet of length of side 50mm, oil quenching after forging;
(3) gren rod, carries out gren rod, hot-rolled temperature by the sample after forging: 1100 DEG C, every time deflection≤12%, obtains the silk material of 13mm;
(4) solution treatment, carries out solution treatment in 1000 DEG C, 5 hours by the silk material after gren rod;
(5) multi-pass wire drawing, is specially three passage wire drawings, and the 13mm silk material after solution treatment is worked into diameter 8.2mm by first time wire drawing, and second time Wire Drawing is to diameter 4.5mm, and third time, Wire Drawing was to diameter 2.1mm;
(6) stress relief annealing, carries out 500 DEG C, 12 hours stress relief annealings by product after multi-pass wire drawing, the satisfactory nichrome wire finished product of final acquisition.
Test shows, the tensile strength of the present embodiment product and unit elongation improve 34% and 15% respectively than Cr20Ni80, and 1200 DEG C of quick life values improve 68%.Nichrome excellent in mechanical performance, the long service life prepared by above-mentioned technique, overcome deficiency of the prior art, has wide prospects for commercial application.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.
Claims (7)
1. the distortion of nichrome and thermal treatment process, described technique comprises: (1) homogenizing annealing, (2) forging, (3) gren rod, (4) solution treatment, (5) multi-pass wire drawing and (6) stress relief annealing, it is characterized in that, described multi-pass wire drawing is specially three passage wire drawings, 12-15mm silk material after solution treatment is worked into diameter 8-9mm by first time wire drawing, second time Wire Drawing is to diameter 4-5mm, and third time, Wire Drawing was to diameter 2-3mm.
2. the distortion of nichrome as claimed in claim 1 and thermal treatment process, is characterized in that, described homogenizing annealing be specially the ingot casting after by melting in the heat treatment furnace of 950 DEG C, be incubated 16 hours after furnace cooling.
3. the distortion of nichrome as claimed in claim 2 and thermal treatment process, it is characterized in that, described forging is specially the ingot casting after by homogenizing annealing and puts into isothermal forging machine and forge, and forging temperature is 1050 DEG C, obtain the square billet of length of side 50mm, oil quenching after forging.
4. the distortion of nichrome as claimed in claim 3 and thermal treatment process, it is characterized in that, described gren rod is specially the sample after by forging and carries out gren rod, hot-rolled temperature: 1050 DEG C-1150 DEG C, every time deflection≤15%, obtains the silk material of 12-15mm.
5. the distortion of nichrome as claimed in claim 4 and thermal treatment process, it is characterized in that, described solution treatment is specially the silk material after by gren rod and carries out solution treatment in 1000 DEG C, 5 hours.
6. the distortion of nichrome as claimed in claim 5 and thermal treatment process, it is characterized in that, described stress relief annealing is specially carries out 500 DEG C, 12 hours stress relief annealings by product after multi-pass wire drawing.
7. the distortion of nichrome as claimed in claim 6 and thermal treatment process, it is characterized in that, elementary composition and the proportioning of described nichrome is: C:0.1-0.2%, Si:0.1-0.2%, Cr:25-26%, Fe:3-5%, Al:2-4%, Sn:5-6%, Ge:2-3%, Ce.0.01-0.02%, B:0.05-0.1%, S≤0.0001%, P≤0.0001%, and surplus is nickel and inevitable impurity.
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| CN201410428143.2A CN104233137B (en) | 2014-08-26 | 2014-08-26 | Deformation and thermal treatment technology of nichrome alloy |
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| CN201410428143.2A CN104233137B (en) | 2014-08-26 | 2014-08-26 | Deformation and thermal treatment technology of nichrome alloy |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109321783A (en) * | 2018-12-07 | 2019-02-12 | 安徽金月节能科技有限公司 | A kind of corrosion-resistant lectrothermal alloy wire of heating watt high resistance and preparation method thereof |
| CN110042263A (en) * | 2019-04-23 | 2019-07-23 | 丹阳市海威电热合金有限公司 | The preparation method of nickel chromium high-temperature alloy silk |
| CN111659750A (en) * | 2020-05-22 | 2020-09-15 | 李鑫 | Preparation process of high-durability nickel-chromium resistance wire |
| CN115216657A (en) * | 2022-07-20 | 2022-10-21 | 镇江银海镍铬化工有限公司 | Production process of high-performance nickel-chromium alloy resistance wire |
| CN115821115A (en) * | 2022-11-18 | 2023-03-21 | 江阴市诚信合金材料有限公司 | High-stability nickel-chromium resistance alloy wire and production process thereof |
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| CN109321783A (en) * | 2018-12-07 | 2019-02-12 | 安徽金月节能科技有限公司 | A kind of corrosion-resistant lectrothermal alloy wire of heating watt high resistance and preparation method thereof |
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| CN111659750A (en) * | 2020-05-22 | 2020-09-15 | 李鑫 | Preparation process of high-durability nickel-chromium resistance wire |
| CN111659750B (en) * | 2020-05-22 | 2022-01-25 | 深圳市霆茂电子有限公司 | Preparation process of high-durability nickel-chromium resistance wire |
| CN115216657A (en) * | 2022-07-20 | 2022-10-21 | 镇江银海镍铬化工有限公司 | Production process of high-performance nickel-chromium alloy resistance wire |
| CN115216657B (en) * | 2022-07-20 | 2023-09-26 | 镇江银海镍铬化工有限公司 | Production process of high-performance nichrome resistance wire |
| CN115821115A (en) * | 2022-11-18 | 2023-03-21 | 江阴市诚信合金材料有限公司 | High-stability nickel-chromium resistance alloy wire and production process thereof |
| CN115821115B (en) * | 2022-11-18 | 2024-01-09 | 江阴市诚信合金材料有限公司 | High-stability nichrome resistance alloy wire and production process thereof |
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