CN109811269A - A kind of novel high resistance electric heating nickel alloy material and preparation method thereof - Google Patents
A kind of novel high resistance electric heating nickel alloy material and preparation method thereof Download PDFInfo
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- CN109811269A CN109811269A CN201711160234.2A CN201711160234A CN109811269A CN 109811269 A CN109811269 A CN 109811269A CN 201711160234 A CN201711160234 A CN 201711160234A CN 109811269 A CN109811269 A CN 109811269A
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Abstract
The present invention relates to a kind of novel high resistance electric heating nickel alloy materials and preparation method thereof, its main composition and its weight percent content are as follows: Ni:18.0-22.0%, Cr:24.0-26.0%, P:1.5-2.5%, O:0.01-0.08%, Mg:1.00-2.00%, Al:0-0.05%, Cl:0.08-0.20%, Fe: surplus.Its manufacture craft includes 1. intermediate frequency (IF) smeltings；2. electroslag remelting；3. forging；4. hot rolling；5. annealing heat-treatment；6. pickling；7. deburring of polishing；8. spelling coiling welded connect；9. cold rolling；10. slitting forms.Since the invention adopts the above technical scheme, Ni content is greatly lowered on the basis of N40 locomotive brake braking electric resistance alloy, the content of other alloy compositions is adjusted simultaneously, rare earth is especially increased, for the variation of alloy content, is taken appropriate measures in manufacture craft, to reduce production cost, but it is able to maintain performance possessed by N40 locomotive brake braking electric resistance alloy, the energy has been saved, the situation of modern " energy-saving " is met.
Description
Technical field
The present invention relates to a kind of alloy and its manufacture craft, especially a kind of novel high resistance electric heating nickel alloy material and its
Preparation method belongs to metallurgical technology field.
Background technique
Locomotive brake braking is electric power, the main raw material(s) in diesel locomotive brake system resistor box with electric resistance alloy, it
Working principle be: when locomotive brake, locomotive wheel hub and brake ribbon generate friction moment and generate a large amount of electric energy, locomotive brake
Braking is exactly to guarantee that the interior environment of locomotive work does not change for effectively guiding the electric energy with electric resistance alloy.So right
The resistivity and resistance homogeneity of this kind of alloy have very high requirement.The common trade mark is the locomotive brake of N40 currently on the market
Braking electric resistance alloy, main composition and content are as follows: Ni:34.0-37.0%, Cr:18.0-21.0%, P:1.0-
3.0%, O≤0.10%, Mg≤1.00%, Al≤0.05%, Fe: surplus, but price is too high；A kind of also 310S stainless steel,
Its main composition are as follows: Ni:19.0-22.0%, Cr:24.0-26.0%, P :≤1.5%, O≤0.08%, Mg≤
2.00%, Fe: surplus, since resistivity only has 0.95 μ Ω .m, brakes electricity consumption as locomotive brake although reducing price
Alloy is hindered to be not suitable for.
Summary of the invention
For above-mentioned there are problem, the present invention provides a kind of novel high resistance electric heating nickel alloy material and preparation method thereof,
Each composition component content is adjusted, while reducing production cost, and is able to maintain or improves the performance of electric resistance alloy.
In order to reach the goals above, the present invention uses following technical scheme, a kind of novel high resistance electric heating nickel alloy material
And preparation method thereof, main composition and its weight percent content are as follows: Ni:19.0%, Cr:25.0%, P:2.0%,
O:0.04%, Mg:1.00%, Al:0%, Cl:0.20%, Fe: surplus.
Above-mentioned a kind of novel high resistance electric heating nickel alloy material and preparation method thereof, manufacture craft are as follows:
1, intermediate frequency (IF) smelting:
1.1 raw material preparations: including furnace charge, slag charge and deoxidier, the furnace charge is Ni, Cr, Fe and Mg material, the slag charge
For calcium agent (such as lime, fluorite), the deoxidier is aluminium agent (such as aluminium pulverized limestone), spare after toasted；
1.2 chargings: toasted rear spare Ni, Cr, Fe furnace charge in 1.1 steps is fitted into mid-frequency melting furnace, to furnace charge
Adjustment slag fluidity is allowed to good in time after melting down；
1.3 refinings:
After using deoxidier (such as aluminium pulverized limestone) deoxidation in batches, every batch of deoxidier to be added after load melting, to miscellaneous in molten steel
Matter (steel slag) reacted with deoxidier 3-10 minutes after again gently with iron staff point slag, increase deoxidier and contacted with steel slag, steel slag is complete
It can whiten after deoxidation, until Mg is added when slag is white, add still deoxidation in batches after Mg, deaeration time must not be less than 5 minutes, and slag is white to keep big
In 10 minutes addition P, before tapping in 5-8 minutes addition furnaces, rare earth was before tapping in 2-3 minutes addition furnaces, refining temperature:
1530 DEG C -1560 DEG C, tapping temperature: 1520 DEG C -1550 DEG C；
2, electroslag remelting:
The allotment of 2.1 striking agent and remelting electroslag system: striking agent is prepared with fluorite and titanium dioxide, uses OaF2、Al2O3With
OaO makes remelting electroslag system；
2.2 shove charges: chassis, striking agent, crystallizer and electrode are installed；
2.3 striking slag making: reducing electrode contacts electrode with striking agent, completes striking work, melts striking agent, is added
Remelting electroslag system；
2.4 smelt: control electric current 2400-2800A, voltage 38-41Cr makes electrode melting, until crystallizer is filled
2.5 is cooling: after having smelted, it is air-cooled that remelted ingot takes off ingot after cooling down 30 minutes in a crystallizer.
3, it forges:
3.1 heating: charging temperature :≤700 DEG C, the heating-up time: >=60 minutes, heating temperature: 1160-1180 DEG C, heat preservation
Time: >=30 minutes, initial forging temperature: >=1100 DEG C, final forging temperature: >=850 DEG C；
3.2 forgings: forging uses one weight of the second light industry bureau, two uniform operation methods start to be tapped with lesser deflection, etc.
Plasticity takes the circumstances into consideration to thump after improving, and taps again when closing on final forging temperature, and deformation requirements are uniform, avoids hitting repeatedly in same position,
Each feed should be less than boring width, and each feed should be greater than drafts, avoids generating folding, when steel ingot forges, first forges microcephaly,
Microcephaly forges size qualification, then turns forging major part around；
4, hot rolling: charging temperature :≤850 DEG C
Heating-up time: >=40 minutes
The hot temperature of power: 1160-1180 DEG C
Soaking time: >=20 minutes
Initial forging temperature: >=1100 DEG C
Final forging temperature: >=850 DEG C
5, annealing heat-treatment: heat treatment temperature is 1080 DEG C, keeps the temperature 30 minutes；
6, pickling: 65-80 DEG C of pickling temperature, sour with the made pickling solution pickling of sulfuric acid, sodium nitrate, sodium chloride mixing
Wash time 10-30min
7, polishing deburring: the burr, foreskin, the comprehensive reconditioning of crackle surface appearance are clean；
8, it spells coiling welded connect: resistance band both ends being had one's hair trimmed, are welded with automatic argon arc welder, are rolled into after welding through automatic power reel
Enter next procedure after dribbling；
9, cold rolling: having measured thickness, by following passage carry out finish rolling, 4.0 → 3.7 → 3.3 → 3.0 → 2.75 → 2.55 →
2.35 → 2.15 → 2.0 carry out hydrogen annealing, annealing temperature are as follows: 1100 DEG C → 1.7 → 1.3 → 1.0 → 0.95 → 0.9 → 0.85
→ 0.8, carry out hydrogen annealing, annealing temperature are as follows: 1100 DEG C → 0.60 → 0.55 → 0.52 → 0.50, hydrogen annealing is carried out, is moved back
Fiery temperature are as follows: 1100 DEG C；
10, slitting forms: the finished product band after rolled by cold rolling machine being cut into stripe shape with slitter.
Since the invention adopts the above technical scheme, i.e., on the basis of N40 locomotive brake braking electric resistance alloy substantially
Degree reduces Ni content, while adjusting the content of other alloy compositions, especially increases rare earth, for the variation of alloy content,
It takes appropriate measures in manufacture craft, to reduce production cost, but is able to maintain N40 locomotive brake braking resistance
Performance possessed by alloy, has saved the energy, meets the situation of modern " energy-saving ".
Specific embodiment
Embodiment
A kind of novel high resistance electric heating nickel alloy material and preparation method thereof, the weight percent of main composition contains
Amount are as follows: Ni:18.0%, Cr:26.0%, P:2.5%, O:0.08%, Mg:2.00%, Al:0.05%, Cl:0.08%, Fe: remaining
Amount.
Its manufacture craft are as follows:
1, intermediate frequency (IF) smelting:
1.1 raw material preparations: including furnace charge, slag charge and deoxidier, the furnace charge is nickel plate, micro- carbon chromium, pure iron and manganese metal
Material, the slag charge are calcium agent fluorite, and the deoxidier is aluminium pulverized limestone, spare after toasted；
1.2 chargings: toasted rear spare nickel plate, micro- carbon chromium and pure iron furnace in 1.1 steps are fitted into mid-frequency melting furnace
Material, adjusts slag fluidity after furnace charge is melting down in time and is allowed to good；
1.3 refinings:
After using the deoxidation in batches of deoxidier aluminium pulverized limestone, every batch of deoxidier to be added after load melting, in molten steel impurity (steel
Slag) reacted with deoxidier 3 minutes after again gently with iron staff point slag, increase deoxidier and contacted with steel slag, meeting after the complete deoxidation of steel slag
Whiten, until Mg is added when slag is white, adds still deoxidation in batches after Mg, deaeration time 5 minutes, slag 10 minutes addition P of white holding were tapping
In preceding 8 minutes addition furnaces, rare earth is before tapping in 2 minutes addition furnaces, refining temperature: 1530 DEG C, tapping temperature: 1550 DEG C；
2, electroslag remelting:
The allotment of 2.1 striking agent and remelting electroslag system: striking agent is prepared with fluorite and titanium dioxide, uses OaF2、Al2O3With
OaO makes remelting electroslag system；
2.2 shove charges: chassis, striking agent, crystallizer and electrode are installed；
2.3 striking slag making: reducing electrode contacts electrode with striking agent, completes striking work, melts striking agent, is added
Remelting electroslag system；
2.4 smelt: control electric current 2800A, voltage 39Cr makes electrode melting, until crystallizer is filled；
2.5 is cooling: after having smelted, it is air-cooled that remelted ingot takes off ingot after cooling down 30 minutes in a crystallizer.
3, it forges:
3.1 heating: charging temperature: 700 DEG C, the heating-up time: 60 minutes, heating temperature: 1180 DEG C, soaking time: 35 points
Clock, initial forging temperature: 1130 DEG C, final forging temperature: 870 DEG C；
3.2 forgings: forging uses one weight of the second light industry bureau, two uniform operation methods start to be tapped with lesser deflection, etc.
Plasticity takes the circumstances into consideration to thump after improving, and taps again when closing on final forging temperature, and deformation requirements are uniform, avoids hitting repeatedly in same position,
Each feed should be less than boring width, and each feed should be greater than drafts, avoids generating folding, when steel ingot forges, first forges microcephaly,
Microcephaly forges size qualification, then turns forging major part around；
4, hot rolling: charging temperature: 830 DEG C
Heating-up time: 43 minutes
Heating temperature: 1180 DEG C
Soaking time: 25 minutes
Initial forging temperature: 1130 DEG C
Final forging temperature: 870 DEG C
5, annealing heat-treatment: heat treatment temperature is 1080 DEG C and keeps the temperature 30 minutes；
6, pickling: with the made pickling solution pickling of sulfuric acid, sodium nitrate, sodium chloride mixing, 80 DEG C of pickling temperature, when pickling
Between 10min
7, polishing deburring: the burr, foreskin, the comprehensive reconditioning of crackle surface appearance are clean；
8, it spells coiling welded connect: resistance band both ends being had one's hair trimmed, are welded with automatic argon arc welder, are rolled into after welding through automatic power reel
Enter next procedure after dribbling.
9, cold rolling: having measured thickness, by following passage carry out finish rolling, 4.0 → 3.7 → 3.3 → 3.0 → 2.75 → 2.55 →
2.35 → 2.15 → 2.0 carry out hydrogen annealing, annealing temperature are as follows: 1100 DEG C → 1.7 → 1.3 → 1.0 → 0.95 → 0.9 → 0.85
→ 0.8, carry out hydrogen annealing, annealing temperature are as follows: 1100 DEG C → 0.60 → 0.55 → 0.52 → 0.50, hydrogen annealing is carried out, is moved back
Fiery temperature are as follows: 1100 DEG C；
10, slitting forms: the finished product band after rolled by cold rolling machine being cut into stripe shape with slitter.
Claims (2)
1. a kind of novel high resistance electric heating nickel alloy material and preparation method thereof, the weight percent content of main composition
Are as follows: Ni:18.0%, Cr:26.0%, P:2.5%, O:0.08%, Mg:2.00%, Al:0.05%, Cl:0.08%, Fe: remaining
Amount.
2. a kind of novel high resistance electric heating nickel alloy material according to claim 1 and preparation method thereof, feature is in it
The weight percent content of main composition is Ni:19.0%, Cr:25.0%, P:2.0%, O:0.04%, Mg:1.00%,
Al:0%, Cl:0.20%, Fe: surplus.
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| CN201711160234.2A CN109811269A (en) | 2017-11-20 | 2017-11-20 | A kind of novel high resistance electric heating nickel alloy material and preparation method thereof |
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| CN201711160234.2A CN109811269A (en) | 2017-11-20 | 2017-11-20 | A kind of novel high resistance electric heating nickel alloy material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359250A (en) * | 2020-10-29 | 2021-02-12 | 江苏新核合金科技有限公司 | Preparation method of high-resistance electrothermal alloy |
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2017
- 2017-11-20 CN CN201711160234.2A patent/CN109811269A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359250A (en) * | 2020-10-29 | 2021-02-12 | 江苏新核合金科技有限公司 | Preparation method of high-resistance electrothermal alloy |
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Application publication date: 20190528 |