CN103725971A - Preparation method of locomotive braking resistance tape - Google Patents
Preparation method of locomotive braking resistance tape Download PDFInfo
- Publication number
- CN103725971A CN103725971A CN201410023831.0A CN201410023831A CN103725971A CN 103725971 A CN103725971 A CN 103725971A CN 201410023831 A CN201410023831 A CN 201410023831A CN 103725971 A CN103725971 A CN 103725971A
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- Prior art keywords
- preparation
- annealing
- resistance tape
- locomotive braking
- resistance
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Abstract
The invention relates to a locomotive braking resistance tape and a preparation method thereof. The resistance tape comprises the following main components in percentage by weight: 13.5-14.5% of chromium, 3.5-4.5% of aluminum, 0.25-0.35% of titanium, at most 0.04% of carbon, 0.05-0.10% of rare earth and the balance of iron. The preparation method of the resistance tape sequentially comprises the following steps: vacuum smelting, electroslag remelting, forging, hot rolling, annealing heat treatment, acid washing, trimming by sanding, cold rolling, gas-protected annealing and molding. The locomotive braking resistance tape is made of a ferrite alloy instead of metal nickel, thereby greatly lowering the production cost. The titanium element is adopted to enhance the resistance uniformity of the resistance tape and lower the resistance temperature coefficient of the resistance tape, thereby further enhancing the product quality. The preparation method comprises the step of vacuum smelting, so that the air content in the generated resistance tape is lower, thereby ensuring the purity of the product.
Description
The application is divisional application, the application number of original application: 201110230208.9, the applying date: 2011-08-11, invention and created name < < locomotive braking resistance belt and preparation method thereof > >.
Technical field
The present invention relates to alloy and manufacture craft thereof, specifically a kind of locomotive braking resistance belt and preparation method thereof.
Background technology
On trunk railway diesel-electric locomotive, all adopt resistive braking device, because locomotive is take diesel engine as power, through flexible coupling, be connected with main generator, the electricity sending through electrical control cubicles for train wheel on traction electric machine electrical source of power is provided; Traction electric machine is passed to wheel through driving toothed gear upper follower gear is driven to wheel train operation, and whole process is the journey that turns over of mechanical energy--electric energy--mechanical energy.Locomotive is when braking, because the rotor speed of traction electric machine is higher than stator rotatingfield rotating speed, traction electric machine becomes electromagnetic power output state (that is: generator condition) by electromagnetic power input state, to to the locomotive power of having the opposite effect, be the damping force of train, this part alternating-current is after the rectification of thermal change device, directly add to braking resistor energy transform into heat energy, the cooling air being blown into through blower fan is taken away and is consumed.This is the conversion process of a mechanical energy--electric energy--heat energy.
The resistive band adopting in braking resistor of the prior art, often adopts nickel alloy material to make, and cost is higher.For example: the locomotive brake braking resistance alloy that the conventional trade mark is N40 in the market, its chief component composition and content are: Ni:34.0-37.O%, Cr:18.0-21.0%, Si:1.0-3.0%, C≤0.10%, Mn≤1.00%, Al≤0.05%, Fe: surplus, but because the content of nickel is higher, cause its price too high; Also having a kind of trade mark is the stainless steel materials of 310S, its chief component composition is: Ni:19.0-22.0%, Cr:24.0-26.0%, Si :≤1.5%, C≤0.08%, Mn≤2.00%, Fe: surplus, although it has reduced the usage quantity of Ni, overall cost is still higher, and resistivity only has 0.95uQm, be not suitable as locomotive brake braking resistive band.
Summary of the invention
The technical problem to be solved in the present invention is to provide locomotive braking resistance belt of a kind of lower cost and preparation method thereof.
In order to solve the problems of the technologies described above, the invention provides a kind of locomotive braking resistance belt, it each predominant quantity degree comprising is: chromium: 13.5-14.5%, aluminium: 3.5-4.5%, titanium: 0.25-0.35%, carbon :≤0.04%, rare earth: 0.05-0.10%, iron: surplus.
The preparation method of above-mentioned locomotive braking resistance belt, comprises following operation: vacuum melting successively; Esr; Forge; Hot rolling; Annealing thermal treatment; Pickling; Polishing deburring; Cold rolling; Gas shield annealing; Itemize moulding.
Technique scheme of the present invention has the following advantages compared to existing technology: the locomotive braking resistance belt in (1) the present invention is Alfer, do not re-use metallic nickel, can significantly reduce production costs, but can keep the locomotive brake that the trade mark is N40 to brake the performance having with resistance alloy.(2) in locomotive braking resistance belt of the present invention, adopted titanium elements, can improve the resistance homogeneity of resistive band, can reduce the temperature coefficient of resistance of this resistive band simultaneously, avoided the considerable influence of temperature variation to resistive band resistance, and then improved product quality.In addition, also added rare earth element, it is suitable for making the alloying performance of resistive band better.(3) preparation method of locomotive braking resistance belt comprises vacuum melting operation, and the abundant content of air in the resistive band that can make to generate is less, has guaranteed the purity of product.
Embodiment
Embodiment 1
Each predominant quantity degree that the locomotive braking resistance belt of the present embodiment comprises is: chromium: 13.5%, and aluminium: 4.5%, titanium: 0.35%, carbon :≤0.04%, rare earth: 0.05%, iron: surplus.
Embodiment 2
Each predominant quantity degree that the locomotive braking resistance belt of the present embodiment comprises is: chromium: 14%, and aluminium: 4.0%, titanium: 0.30%, carbon :≤0.03%, rare earth: 0.07%, iron: surplus.
Embodiment 3
Each predominant quantity degree that the locomotive braking resistance belt of the present embodiment comprises is: chromium: 14.5%, and aluminium: 3.5%, titanium: 0.25%, carbon :≤0.02%, rare earth: 0.10%, iron: surplus.
Embodiment 4
The preparation method of the locomotive braking resistance belt in the various embodiments described above comprises following operation successively:
Vacuum melting; Esr; Forge; Hot rolling; Annealing thermal treatment; Pickling; Polishing deburring; Cold rolling; Gas shield annealing; Itemize moulding.
Wherein: the vacuum induction melting furnace that vacuum melting operation adopts east, Jinzhou metallurgical technology research company limited to produce, model ZG-0.5LB.Smelting temperature is 1500-1650 ℃ (the best is 1580 ℃); Vacuum tightness≤0.13Pa.
Described gas shield annealing operation comprises: adopt continous way gas shield bright heat treatment electric furnace, for final annealing and the destressing processing of resistive band, product enters burner hearth and reaches gas shield effect at (mol ratio: hydrogen 75%, the nitrogen 25%) mixed gas decomposing through liquefied ammonia, whole annealing furnace take before, during and after three districts temperature controls operations, product You Yi district enters boiler tube and heats up, length is 3 meters, 850 ℃ of temperature controls; Two section length are 2 meters, and 800 ℃ of temperature controls, carry out heat preservation hot processing; 3rd district, length is 750 ℃ of 3 meters of temperature controls, carries out preserving temperature and reducing temperature processing; Whole production line carries out under the linear velocity of 5-6 m/min, product after this equipment thermal treatment, surface-brightening, non-oxidation phenomenon, handled good product consistency.
The semicontinuous vacuum induction melting furnace of ZG-0.5LB is mainly used in all kinds of superalloys, Precise Alloy; iron-based, nickel-base alloy and some non-ferrous metal and alloy thereof, under vacuum state or protection of inert gas, utilize the principle of Frequency Induction Heating to melt, smelting, cast molding.This stove is except possessing the whole features of general vacuum induction furnace, between feeding chamber and melting storehouse, melting storehouse and ingot mould storehouse, with valve, separate, therefore can be not destroying feed in raw material under vacuum condition (thermometric), melting, ingot casting is cooling and go out ingot, realizes semicontinuous production.
The use temperature of the semicontinuous vacuum induction melting furnace of ZG-0.5LB generally depends on crucible material, and when doing crucible material with magnesium oxide, smelting temperature can reach 1800 ℃; While doing crucible material with zirconium white, can reach 1900 ℃, and when reaching 2500 ℃ with plumbago crucible, user can select crucible material kind according to the material of own melting.
The semicontinuous vacuum induction furnace of ZG-0.5LB by electric furnace body, intermediate frequency (IF) smelting power supply, electric control system, vacuum system, enter electric system, furnace tilting mechanism, inductor block, segregaion valve, hydraulic efficiency system, pneumatic system, water-cooling system and form, be provided with in addition workplatform etc.
Described esr operation comprises:
1, the allotment of striking agent and remelting electroslag system: prepare striking agent with fluorite and titanium dioxide, use CaF
2, Al
2o
3make remelting electroslag system with CaO;
2, shove charge: chassis, striking agent, crystallizer and electrode are installed;
3, striking slag making: reduce electrode electrode is contacted with striking agent, complete striking work, make striking agent fusing, add remelting electroslag system;
4, smelt: control electric current 2400-2800A, voltage 38-41V, makes electrode melting, until crystallizer is filled;
5, cooling: after having smelted, remelting steel ingot takes off ingot air cooling in crystallizer after cooling 30 minutes;
The described operation that forges comprises:
1, heating: charging temperature :≤850 ℃, the heating-up time: >=60 minutes, Heating temperature: 1180-1250 ℃, soaking time: >=50 minutes, initial forging temperature: >=1150 ℃, final forging temperature: >=950 ℃;
2, forging: forging adopts the second light industry bureau one weight, and two even methodologys, start to touch with less deflection, etc. plasticity, improve the rear bang of taking the circumstances into consideration, while closing on final forging temperature, touch again, deformation requirements is even, avoid repeatedly clashing at same position, it is wide that each feed should be less than brill, and each feed should be greater than draught, avoids producing folding, when steel ingot forges, first forge microcephaly, it is qualified that microcephaly forges size, then turn forging major part around;
Described hot-rolled process comprises:
Charging temperature :≤850 ℃;
Heating-up time: >=50 minutes;
Heating temperature: 1180-1250 ℃;
Soaking time: >=50 minutes;
Initial forging temperature: >=1150 ℃;
Final forging temperature: >=950 ℃;
Described annealing heat treatment step: thermal treatment temp is 780 ℃, is incubated 5 hours;
Described pickling process: with extremely white of sulfuric acid immersion, salt acid rinse, pickling temperature 50-80 ℃, pickling time 20-30min.
Performance test table:
Test event | 310S | N40 | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
Resistance temperature variation factor (1000 ℃) | 1.295 | 1.219 | 1.13 | 1.13 | 1.13 | 1.12 | 1.13 |
Elongation | ≥21 | ≥22 | 22 | 23 | 22 | 23 | 23 |
Resistivity | 0.95 | 1.04 | 1.24 | 1.24 | 1.25 | 1.23 | 1.24 |
Element maximum operation (service) temperature | 950 | 1000 | 1200 | 1200 | 1200 | 1200 | 1200 |
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 without also giving exhaustive to all embodiments.And these belong to apparent variation that spirit of the present invention extended out or variation still among protection scope of the present invention.
Claims (1)
1. a preparation method for locomotive braking resistance belt, is characterized in that:
Each predominant quantity degree of described locomotive braking resistance belt is::
Chromium: 13.5-14.5%,
Aluminium: 3.5-4.5%,
Titanium: 0.25-0.35%,
Carbon :≤0.04%,
Rare earth: 0.05-0.10%,
Iron: surplus;
The preparation method of above-mentioned locomotive braking resistance belt comprises following operation successively:
Vacuum melting;
Esr;
Forge;
Hot rolling;
Annealing thermal treatment;
Pickling;
Polishing deburring;
Cold rolling;
Gas shield annealing;
Itemize moulding;
Adopt continous way gas shield bright heat treatment electric furnace, product entered to burner hearth at the mixed gas decomposing through liquefied ammonia, to reach gas shield effect, whole annealing furnace take before, during and after the temperature controls operation of 3rd district; Product is 3 meters by a section length, 850 ℃ of temperature controls; Two section length are 2 meters, and 800 ℃ of temperature controls, to carry out heat preservation hot processing; Three section length are 3 meters, and 750 ℃ of temperature controls, to carry out preserving temperature and reducing temperature processing; Whole production line carries out under the linear velocity of 5-6 m/min;
Described annealing heat treatment step: thermal treatment temp is 780 ℃, is incubated 5 hours.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201110230208.9A CN102296237B (en) | 2011-08-11 | 2011-08-11 | Locomotive braking resistance belt and preparation method thereof |
Related Parent Applications (1)
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CN201110230208.9A Division CN102296237B (en) | 2011-08-11 | 2011-08-11 | Locomotive braking resistance belt and preparation method thereof |
Publications (2)
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CN103725971A true CN103725971A (en) | 2014-04-16 |
CN103725971B CN103725971B (en) | 2016-01-20 |
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CN201410023693.6A Expired - Fee Related CN103725970B (en) | 2011-08-11 | 2011-08-11 | The preparation method of the locomotive braking resistance belt containing titanium elements |
CN201410023831.0A Expired - Fee Related CN103725971B (en) | 2011-08-11 | 2011-08-11 | The preparation method of locomotive braking resistance belt |
CN201110230208.9A Active CN102296237B (en) | 2011-08-11 | 2011-08-11 | Locomotive braking resistance belt and preparation method thereof |
CN201410024118.8A Expired - Fee Related CN103741041B (en) | 2011-08-11 | 2011-08-11 | Locomotive braking resistance belt of a kind of lower cost and preparation method thereof |
CN201410023901.2A Expired - Fee Related CN103741040B (en) | 2011-08-11 | 2011-08-11 | A kind of preparation method of locomotive braking resistance belt |
CN201410023832.5A Active CN103741038B (en) | 2011-08-11 | 2011-08-11 | Locomotive braking resistance belt that resistance homogeneity is good and preparation method thereof |
CN201410024172.2A Expired - Fee Related CN103710630B (en) | 2011-08-11 | 2011-08-11 | Can the locomotive braking resistance belt reducing temperature coefficient of resistance and preparation method thereof |
CN201410026039.0A Expired - Fee Related CN103710632B (en) | 2011-08-11 | 2011-08-11 | Locomotive braking resistance belt that alloying performance is good and preparation method thereof |
CN201410023854.1A Expired - Fee Related CN103741039B (en) | 2011-08-11 | 2011-08-11 | The preparation method of the locomotive braking resistance belt that a kind of resistance homogeneity is good |
CN201410024223.1A Expired - Fee Related CN103710631B (en) | 2011-08-11 | 2011-08-11 | The preparation method of the locomotive braking resistance belt of lower cost |
CN201410024119.2A Expired - Fee Related CN103710629B (en) | 2011-08-11 | 2011-08-11 | A kind of preparation method reducing the locomotive braking resistance belt of temperature coefficient of resistance |
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CN201410023693.6A Expired - Fee Related CN103725970B (en) | 2011-08-11 | 2011-08-11 | The preparation method of the locomotive braking resistance belt containing titanium elements |
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CN201110230208.9A Active CN102296237B (en) | 2011-08-11 | 2011-08-11 | Locomotive braking resistance belt and preparation method thereof |
CN201410024118.8A Expired - Fee Related CN103741041B (en) | 2011-08-11 | 2011-08-11 | Locomotive braking resistance belt of a kind of lower cost and preparation method thereof |
CN201410023901.2A Expired - Fee Related CN103741040B (en) | 2011-08-11 | 2011-08-11 | A kind of preparation method of locomotive braking resistance belt |
CN201410023832.5A Active CN103741038B (en) | 2011-08-11 | 2011-08-11 | Locomotive braking resistance belt that resistance homogeneity is good and preparation method thereof |
CN201410024172.2A Expired - Fee Related CN103710630B (en) | 2011-08-11 | 2011-08-11 | Can the locomotive braking resistance belt reducing temperature coefficient of resistance and preparation method thereof |
CN201410026039.0A Expired - Fee Related CN103710632B (en) | 2011-08-11 | 2011-08-11 | Locomotive braking resistance belt that alloying performance is good and preparation method thereof |
CN201410023854.1A Expired - Fee Related CN103741039B (en) | 2011-08-11 | 2011-08-11 | The preparation method of the locomotive braking resistance belt that a kind of resistance homogeneity is good |
CN201410024223.1A Expired - Fee Related CN103710631B (en) | 2011-08-11 | 2011-08-11 | The preparation method of the locomotive braking resistance belt of lower cost |
CN201410024119.2A Expired - Fee Related CN103710629B (en) | 2011-08-11 | 2011-08-11 | A kind of preparation method reducing the locomotive braking resistance belt of temperature coefficient of resistance |
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Families Citing this family (4)
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CN106893936B (en) * | 2014-06-11 | 2018-11-30 | 丹阳市凯鑫合金材料有限公司 | The production method of the resonant rod of the RF device of vacuum melting invar cold-heading silk |
CN105256254B (en) * | 2015-10-30 | 2017-02-01 | 河北五维航电科技有限公司 | Preparation method of stripping tube material for preparing urea by means of CO2 gas stripping method |
CN107287407A (en) * | 2017-05-02 | 2017-10-24 | 太原钢铁(集团)有限公司 | The method for handling ferrum-chromium-aluminum cold-strip |
CN115652169A (en) * | 2022-11-10 | 2023-01-31 | 张家港快工品科技有限公司 | Preparation method of electric resistance band for heat treatment equipment |
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CN1122841A (en) * | 1994-11-11 | 1996-05-22 | 冶金工业部包头稀土研究院 | Non-brittle Cr-Al-rare earth metal-Fe alloy |
CN1936054A (en) * | 2005-09-19 | 2007-03-28 | 丹阳市龙鑫合金有限公司 | Electric resistance alloy and its preparing process |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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ITRM20010584A1 (en) * | 2001-09-26 | 2003-03-26 | Acciai Speciali Terni Spa | FERRITIC STAINLESS STEEL AND ITS USE IN THE MANUFACTURE OF ITEMS FOR USE AT HIGH TEMPERATURES. |
JP2010116622A (en) * | 2008-11-14 | 2010-05-27 | Nisshin Steel Co Ltd | Ferritic stainless steel for heat pipe and steel sheet, and heat pipe and high temperature waste heat recovery device |
-
2011
- 2011-08-11 CN CN201410023693.6A patent/CN103725970B/en not_active Expired - Fee Related
- 2011-08-11 CN CN201410023831.0A patent/CN103725971B/en not_active Expired - Fee Related
- 2011-08-11 CN CN201110230208.9A patent/CN102296237B/en active Active
- 2011-08-11 CN CN201410024118.8A patent/CN103741041B/en not_active Expired - Fee Related
- 2011-08-11 CN CN201410023901.2A patent/CN103741040B/en not_active Expired - Fee Related
- 2011-08-11 CN CN201410023832.5A patent/CN103741038B/en active Active
- 2011-08-11 CN CN201410024172.2A patent/CN103710630B/en not_active Expired - Fee Related
- 2011-08-11 CN CN201410026039.0A patent/CN103710632B/en not_active Expired - Fee Related
- 2011-08-11 CN CN201410023854.1A patent/CN103741039B/en not_active Expired - Fee Related
- 2011-08-11 CN CN201410024223.1A patent/CN103710631B/en not_active Expired - Fee Related
- 2011-08-11 CN CN201410024119.2A patent/CN103710629B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1122841A (en) * | 1994-11-11 | 1996-05-22 | 冶金工业部包头稀土研究院 | Non-brittle Cr-Al-rare earth metal-Fe alloy |
CN1936054A (en) * | 2005-09-19 | 2007-03-28 | 丹阳市龙鑫合金有限公司 | Electric resistance alloy and its preparing process |
Also Published As
Publication number | Publication date |
---|---|
CN103725971B (en) | 2016-01-20 |
CN102296237B (en) | 2014-01-15 |
CN103710629B (en) | 2016-01-20 |
CN103710632B (en) | 2016-01-20 |
CN103710631B (en) | 2016-01-20 |
CN102296237A (en) | 2011-12-28 |
CN103741040A (en) | 2014-04-23 |
CN103741040B (en) | 2016-01-20 |
CN103741041B (en) | 2016-01-20 |
CN103741038A (en) | 2014-04-23 |
CN103741038B (en) | 2016-01-20 |
CN103710631A (en) | 2014-04-09 |
CN103725970A (en) | 2014-04-16 |
CN103710632A (en) | 2014-04-09 |
CN103710630B (en) | 2016-01-20 |
CN103741041A (en) | 2014-04-23 |
CN103710630A (en) | 2014-04-09 |
CN103741039B (en) | 2016-01-20 |
CN103741039A (en) | 2014-04-23 |
CN103710629A (en) | 2014-04-09 |
CN103725970B (en) | 2016-01-20 |
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