CN102059339B - Method for preparing copper based pantograph pan material - Google Patents
Method for preparing copper based pantograph pan material Download PDFInfo
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- CN102059339B CN102059339B CN2010105800880A CN201010580088A CN102059339B CN 102059339 B CN102059339 B CN 102059339B CN 2010105800880 A CN2010105800880 A CN 2010105800880A CN 201010580088 A CN201010580088 A CN 201010580088A CN 102059339 B CN102059339 B CN 102059339B
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- pantograph pan
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Abstract
The invention provides a method for preparing a copper based pantograph pan material, belonging to the technical field of the preparation of a copper graphite self-lubricating composite material. The copper based pantograph pan material is prepared by the steps of: mixing dispersion-strengthening copper powder used as a base body, copper plated graphite used as a wear-reducing material and tin and lead powder used as additives uniformly by a mixing machine and then thermally pressing and sintering. The dispersion-strengthening copper powder is replaced with the traditional pure copper powder as the base body and has more excellent performance. Because the dispersion-strengthening copper has excellent high-temperature strength, rigidity and wear resistance and fusion welding resistance, the pantograph pan material prepared by adopting the dispersion-strengthening copper powder as the base body has more excellent wear resistance, fusion welding resistance and electrolytic corrosion resistance. The preparation method is simple, is easy to control the process, has no pollution, and is suitable for massive production.
Description
Technical field
The invention belongs to copper graphite self-lubricating Composite Preparation technical field, this composite can be used for preparing electric locomotive pantograph sliding plate, belongs to the accessory that a kind of transportation and communication uses.
Background technology
Along with the fast development of China Express Railway, as the most important current collection element of bullet train, the consumption of pantograph pan is increasing.Known pantograph pan has following several kinds at present:
1, simple metal material slide plate
Such slide plate adopts materials processings such as steel, copper to process, and is the pantograph pan product that China's electric locomotive sixties in 20th century uses.Such slide plate mechanical strength is high, draws materials conveniently, and long service life, cost is low.But, strong because slide plate is close with lead material with contact line conducting wire affinity, there is not self-lubricating property in addition, thus very serious to the contact net lead abrasion, limited use.
2, powder metallurgy slide plate
The powder metallurgy slide plate is divided into two types of copper base and iron-baseds.The powder metallurgy slide plate is a basis with metallic iron, copper powders may, adds some lubricated compositions, like carbon, lead and molybdenum bisuphide etc., through mechanical mixture, makes various homogenization of composition, last compacting sintering moulding.Powder metallurgy slide plate mechanical strength is high, and shock resistance is good, and electric conductivity, arc resistance are preferably arranged, and wearability and anti-attrition property are good, and certain self-lubricating property is arranged, and service life is longer.But the powder metallurgy slide plate is still relatively more serious to the abrasion of lead, is limited to use in some places.
3, pure carbon material slide plate
The material with carbon element slide plate itself is exactly good lubricant, and self-lubricating property and anti-attrition performance are good, and is few to the contact line conducting wire wearing and tearing, and high temperature resistant, is difficult for contact line conducting wire the weldering phenomenon taking place.The carbon slide plate can form one deck carbon film on lead when rubbing with the copper contact line conducting wire, improved the abrasion situation of lead greatly.But carbon slide plate mechanical strength is low, poor impact resistance, and the lead hard spot that runs in service causes slide plate to fracture easily and breaks, and service life is low.Particularly in rainy season and humid area, ditch is drawn in easy part, accident between pantograph often occurs.In addition, carbon slide plate intrinsic resistance is big, and the current collection capacity is little, and the contact temperature is high, might cause that lead crosses thermal oxide, burns till continuous pockmark, quickens the lead wearing and tearing.Carbon slide plate powder also can pollute locomotive insulator and contact net insulator, causes insulator generation electric discharge phenomena, causes puncture.
4, metal-impregnated carbon slide
Metal-impregnated carbon slide had both had the characteristics that powder metallurgy slide plate mechanical strength is high, resistivity is little, have again the material with carbon element slide plate little to lead abrasion, be prone to form lubricating film and the strong premium properties of blow-out performance at friction surface.This slide plate is the comparatively desirable pantograph pan of copper conductor section.But this type slide plate shock resistance is poor, in use is prone to the piece phenomenon.
In order to solve above-mentioned pantograph pan deficiency in use, improve one's methods below having occurred in succession.
Publication number is that the patent of invention of CN1793408A discloses a kind of Materials for Electric Locomotive Pantograph Slide Plate and preparation method.This slide plate is matrix with the copper powder, is modified component with coppered carbon material powder, copper carbon fiber, is additive with the mixed powder of iron, chromium, lead, lanthanum, all components is mixed and compression molding, again through sintering get final product sliding material.This material has good electric conductivity, shock resistance and wearability, but this material still belongs to traditional copper based powder metallurgy material, still has the shortcoming of copper-based material to the copper conductor serious wear.
Publication number is that the application for a patent for invention of CN1178745A discloses a kind of carbon-carbon composite material pantograph slide for electric locomotive.This slide plate is a matrix material with the coppered carbon powder, adopts short carbon fiber as reinforcing agent, and with thermosetting resin as binding agent, adopt hygrometric state to mix or the dry state method of mixing, raw material is fully mixed, cold pressing then and hot-forming.This slide plate has excellent friction and wear behavior, but poor impact toughness, and resistivity is high.
Summary of the invention
The purpose of this invention is to provide a kind of raising slide plate lubricity and wearability, strengthen the preparation method of a kind of novel copper-based Material for Pantograph Slide of sliding material intensity.
This pantograph pan uses dispersion-strengthened Cu to be matrix on the copper based powder metallurgy material basis, adds a large amount of copper-plated graphite lubricants, adds trace element, adopts the hot-pressing densification forming technique, preparation high-performance sliding material.
The preparation process of this sliding material is: dispersion-strengtherning copper powder, copper coated graphite powder and additive tin, lead are mixed according to a certain percentage, are 20-30 wt % as the copper-plated graphite content of lubriation material, and wherein the granularity of copper-plated graphite is 100-150 μ m; Copper content is 40-60 wt %, and the content of additive tin is 4-6wt%, and the plumbous content of additive is 2-4 wt %; Dispersion-strengthened Cu is a surplus, and mixing time is 5-10 hour, and the material that mixes is put into hot press; In temperature is 850-950 ℃; Pressure is to carry out hot pressing under the 30-50MPa, and the dwell time is 30-50min, can obtain well behaved Materials for Electric Locomotive Pantograph Slide Plate.
It is low that the Material for Pantograph Slide that the present invention prepares has resistivity, and shock resistance is good, and coefficient of friction is little; The advantage little to the abrasion of lead; Have the two advantage of the low good guardwire of greasy property with metal-impregnated carbon slide of the intensity high resistivity of traditional copper base sliding material concurrently, preparation technology is simple simultaneously, and technical process is easy to control; And pollution-free, be suitable for producing in enormous quantities.
The advantage of this new type slide plate material have following some: the intensity and the wearability that 1, significantly improve sliding material.The employing dispersion-strengthened Cu is a matrix, and the intensity of sliding material and impact property will obviously be superior to pure carbon slide plate and metal-impregnated carbon slide; Owing to the wearability of dispersion-strengthened Cu, the anti-wear performance of sliding material also improves greatly simultaneously.2, guardwire.At first, because the assurance of dispersion-strengthened Cu matrix frame strength can add lubricant component in a large number, improve the greasy property of material; Secondly, anti-arcing reduces the arcing melting loss to lead.Once more, the resistance fusion welding of dispersion-strengthened Cu can reduce the adhesive wear to copper conductor; Do not contain bulky grain hard phase in the material simultaneously, reduced scuffing and wearing and tearing lead.3, electric conductivity will obviously be superior to pure carbon slide plate and metal-impregnated carbon slide.Main component is a dispersion-strengthened Cu in the material, and its electric conductivity is excellent.
The specific embodiment
Embodiment 1
Dispersion-strengtherning copper powder, copper coated graphite powder and additive tin, lead are mixed according to a certain percentage, are 20wt% as the copper-plated graphite content of lubriation material, and wherein the granularity of copper-plated graphite is 100 μ m; Copper content is 60 wt %, and the content of additive tin is 4wt%, and the plumbous content of additive is 2 wt %; Dispersion-strengthened Cu is a surplus, and mixing time is 5 hours, and the material that mixes is put into hot press; In temperature is 850 ℃; Pressure is to carry out hot pressing under the 30MPa, and the dwell time is 30min, can obtain well behaved Materials for Electric Locomotive Pantograph Slide Plate;
Embodiment 2
Dispersion-strengtherning copper powder, copper coated graphite powder and additive tin, lead are mixed according to a certain percentage, are 25wt% as the copper-plated graphite content of lubriation material, and wherein the granularity of copper-plated graphite is 125 μ m; Copper content is 50wt%, and the content of additive tin is 5wt%, and the plumbous content of additive is 3wt %; Dispersion-strengthened Cu is a surplus, and mixing time is 8 hours, and the material that mixes is put into hot press; In temperature is 900 ℃; Pressure is to carry out hot pressing under the 40MPa, and the dwell time is 40min, can obtain well behaved Materials for Electric Locomotive Pantograph Slide Plate;
Embodiment 3
Dispersion-strengtherning copper powder, copper coated graphite powder and additive tin, lead are mixed according to a certain percentage, are 30wt % as the copper-plated graphite content of lubriation material, and wherein the granularity of copper-plated graphite is 150 μ m; Copper content is 40wt%, and the content of additive tin is 6wt%, and the plumbous content of additive is 4 wt %; Dispersion-strengthened Cu is a surplus, and mixing time is 10 hours, and the material that mixes is put into hot press; In temperature is 950 ℃; Pressure is to carry out hot pressing under the 50MPa, and the dwell time is 50min, can obtain well behaved Materials for Electric Locomotive Pantograph Slide Plate.
Claims (1)
1. copper-base pantograph slide plate preparation methods; It is characterized in that: raw material comprises: copper-plated graphite, tin, lead and dispersion-strengthened Cu, each raw material account for raw material gross weight percentage composition and be: copper-plated graphite content is that the content of 20-30%, tin is that 4-6%, plumbous content are that 2-4% and surplus are the matrix dispersion-strengthened Cu; Wherein, the granularity of described copper-plated graphite is 100-150 μ m, and copper content is the 40-60 % of copper-plated graphite weight in copper-plated graphite;
Raw material is mixed, and mixing time is 5-10 hour, and the material that mixes is put into hot press, is 850-950 ℃ in temperature, and pressure is to carry out hot pressing under the 30-50MPa, and the dwell time is 30-50min, obtains the copper-base pantograph slide plate material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105800880A CN102059339B (en) | 2010-12-09 | 2010-12-09 | Method for preparing copper based pantograph pan material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105800880A CN102059339B (en) | 2010-12-09 | 2010-12-09 | Method for preparing copper based pantograph pan material |
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| Publication Number | Publication Date |
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| CN102059339A CN102059339A (en) | 2011-05-18 |
| CN102059339B true CN102059339B (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105800880A Expired - Fee Related CN102059339B (en) | 2010-12-09 | 2010-12-09 | Method for preparing copper based pantograph pan material |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104209508A (en) * | 2014-08-20 | 2014-12-17 | 安徽汉升新金属技术有限公司 | Copper powder used on copper and lead composite material and production method of copper powder |
| CN104451224A (en) * | 2014-11-06 | 2015-03-25 | 北矿新材科技有限公司 | Preparation method of self-lubricating composite material |
| CN105671357B (en) * | 2016-01-21 | 2018-01-16 | 河北工程大学 | A kind of copper-based pantograph sliding material and preparation method thereof |
| CN109182833B (en) * | 2018-08-28 | 2020-11-06 | 合肥工业大学 | Copper-based powder metallurgy pantograph pan material taking spherical chromium powder as strengthening phase and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041136A (en) * | 1988-09-14 | 1990-04-11 | 成都铁路局科学技术研究所 | Metal-soaked carbon block of bow collector of electric locomotive |
| CN1265429A (en) * | 2000-03-10 | 2000-09-06 | 上海交通大学 | Pantograph slide-plate of composite carbon-copper material reinforced with continuous long carbon fiber |
| CN1793408A (en) * | 2005-12-30 | 2006-06-28 | 东北大学 | Pantograph slip plate for electric locomotive and mfg. method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6010106B2 (en) * | 1977-09-14 | 1985-03-15 | 曙ブレーキ工業株式会社 | Method for imparting low-temperature lubricity to iron-based sintered alloy friction materials |
| JPH0649510A (en) * | 1992-07-30 | 1994-02-22 | Teikoku Carbon Kogyo Kk | Production of wear-resistant sintered alloy for current colecting slider |
-
2010
- 2010-12-09 CN CN2010105800880A patent/CN102059339B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041136A (en) * | 1988-09-14 | 1990-04-11 | 成都铁路局科学技术研究所 | Metal-soaked carbon block of bow collector of electric locomotive |
| CN1265429A (en) * | 2000-03-10 | 2000-09-06 | 上海交通大学 | Pantograph slide-plate of composite carbon-copper material reinforced with continuous long carbon fiber |
| CN1793408A (en) * | 2005-12-30 | 2006-06-28 | 东北大学 | Pantograph slip plate for electric locomotive and mfg. method thereof |
Non-Patent Citations (2)
| Title |
|---|
| JP昭54-43808A 1979.04.06 |
| JP特开平6-49510A 1994.02.22 |
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