CN102975423A - Powder metallurgy brake caliper and production method thereof - Google Patents
Powder metallurgy brake caliper and production method thereof Download PDFInfo
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- CN102975423A CN102975423A CN2012104945171A CN201210494517A CN102975423A CN 102975423 A CN102975423 A CN 102975423A CN 2012104945171 A CN2012104945171 A CN 2012104945171A CN 201210494517 A CN201210494517 A CN 201210494517A CN 102975423 A CN102975423 A CN 102975423A
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Abstract
The invention relates to a powder metallurgy brake caliper and a production method thereof. The powder metallurgy brake caliper comprises a brake caliper base body and a wear-proof iron alloy layer which is arranged on the surface of the brake caliper base body. Wear-proof iron alloy is adopted at a position where the brake caliper is most likely to wear; the strength of the iron alloy is slightly low while the toughness of the iron alloy is high; a powder metallurgy way is combined with the common brake caliper base body, so that the cost of the product is effectively reduced.
Description
Technical field
The present invention relates to automobile-used braking clamp, refer to especially a kind of powder metallurgy braking clamp and preparation method.
Background technology
Braking clamp includes copper base braking clamp, aluminium base braking clamp and iron-based braking clamp with the brake disc braking clamp that the incompatible vehicle that stops high-speed cruising now using that matches.Copper base braking clamp generally only be used for some high-end vehicles, and aluminium base braking clamp now is generally low speed motorcycle or electric motor car to adopt because cost is high because intensity and anti-wear performance are not high, what use amount was maximum is the iron-based braking clamp.
Braking clamp is topmost easy loss part in the vehicle, for vehicle out of service, must occur friction between braking clamp and the brake disc, and simultaneously high temperature appears in surface moment, need to be by braking clamp and brake disc with the heat transmission.Universal design is the anti-wear performance that the anti-wear performance of braking clamp is lower than brake disc, mainly is because the cost of brake disc will be far above the cost of braking clamp.
By inhomogeneous ferroalloy is analyzed discovery, with respect to requiring the braking clamp and not obvious, the anti-wear performance of braking clamp most importantly is to improve the life-span of braking clamp concerning the heat transfer performance gap for different ferroalloys.
By discarded braking clamp is studied discovery, what really work only be the surperficial 1-2 millimeter part of braking clamp, if the surface abrasion of braking clamp above 2 millimeters, the braking clamp that just must more renew, the remainder of braking clamp can not spend consideration.The as a whole structure of braking clamp of existing utilization that is to say, the entire infrastructure of braking clamp all forms with relatively wear-resistant ferroalloy casting, and these ferroalloys can be discarded because of the wearing and tearing on surface, are the wastes to resource.
Summary of the invention
The objective of the invention is by the technical program, adopting common ferroalloy is matrix, and only the outer surface in matrix is processed with the wear-resistant ferrous alloy layer, to reduce the waste to resource.
The present invention is achieved by the following technical solutions:
A kind of powder metallurgy braking clamp includes braking clamp matrix and the wear-resistant iron alloy layer that is positioned at the braking clamp matrix surface.
The material composition of described wear-resistant iron alloy layer includes the silicon of the titanium of the graphite of the copper of 5-10%, the bismuth of 0.3-0.5%, 0.8-1.2%, the boron nitride of 0.1-0.3%, 0.01-0.03%, the nickel of 0.3-0.5%, 0.5-0.8%, the zirconium of 0.3-0.5%, the aluminium of 1-3%, the vanadium iron that contains vanadium 5% percentage by weight of 0.3-0.5% and the iron of surplus by weight percentage.
The thickness of described wear-resistant ferrous alloy layer is the 2-3 millimeter.
Described preparation method is:
Make braking clamp matrix blank, the material of matrix is that any conventional iron-based alloys such as common carbon steel, ferrous alloy all can be used for processing the braking clamp matrix; In order to reduce when each brake because the copper in the wear-resistant ferrous alloy is to matrix diffusion problem under the high-temperature condition, also can select copper content is the cupric ferroalloy materials of 1-3%;
Batching, by including by weight percentage the silicon of the titanium of the graphite of the copper of 5-10%, the bismuth of 0.3-0.5%, 0.8-1.2%, the boron nitride of 0.1-0.3%, 0.01-0.03%, the nickel of 0.3-0.5%, 0.5-0.8%, the zirconium of 0.3-0.5%, the aluminium of 1-3%, the vanadium iron that contains vanadium 5% percentage by weight of 0.3-0.5% and the iron of surplus;
Batch mixing pulverizes above-mentioned composition as calculated afterwards by batch mixer mixing 30-60 minute;
The wear-resistant ferroalloy powder of one deck is placed first in compacting in mould, then put into the braking clamp matrix, adds wear-resistant ferroalloy powder again, suppresses 10-40 second under 500-700MPa pressure;
With 600-650 ℃ of preheating temperature 1-2 hour, then shaping was pressed again under 150-200MPa in special furnace, increased the adhesion between two kinds of alloys, heated to 1080-1150 ℃ of lower melting 1-3 hour;
Temper and adopt 0.3-0.5MPa water vapour constant temperature to process 5-8 hour after at the uniform velocity being cooled to 550-600 ℃, then cooling.
The beneficial effect that the present invention compares with prior art is:
In the braking clamp position of easy wearing and tearing, select anti abrasive ferroalloy, and the intensity of described ferroalloy is lower slightly but toughness is higher, and the mode by adopting powder metallurgy effectively reduces the cost of product with the combination of common braking clamp matrix.
Description of drawings
Fig. 1 is powder metallurgy braking clamp schematic cross-section of the present invention.
The specific embodiment
Describe by the following examples technical scheme of the present invention in detail, should be understood that, following embodiment only can be used for explaining the present invention and can not be interpreted as to be limitation of the present invention.
With reference to shown in Figure 1, a kind of powder metallurgy braking clamp includes braking clamp matrix 1 and the wear-resistant iron alloy layer 2 that is positioned at the braking clamp matrix surface; The thickness of described wear-resistant ferrous alloy layer is the 2-3 millimeter.
The material composition of described wear-resistant iron alloy layer includes the silicon of the titanium of the graphite of the copper of 5-10%, the bismuth of 0.3-0.5%, 0.8-1.2%, the boron nitride of 0.1-0.3%, 0.01-0.03%, the nickel of 0.3-0.5%, 0.5-0.8%, the zirconium of 0.3-0.5%, the aluminium of 1-3%, the vanadium iron that contains vanadium 5% percentage by weight of 0.3-0.5% and the iron of surplus by weight percentage.
Described preparation method is:
Make braking clamp matrix blank, the material of matrix is that any conventional iron-based alloys such as common carbon steel, ferrous alloy all can be used for processing the braking clamp matrix; In order to reduce when each brake because the copper in the wear-resistant ferrous alloy is to matrix diffusion problem under the high-temperature condition, also can select copper content is the cupric ferroalloy materials of 1-3%.
Batching, by including by weight percentage the silicon of the titanium of the graphite of the copper of 5-10%, the bismuth of 0.3-0.5%, 0.8-1.2%, the boron nitride of 0.1-0.3%, 0.01-0.03%, the nickel of 0.3-0.5%, 0.5-0.8%, the zirconium of 0.3-0.5%, the aluminium of 1-3%, the vanadium iron that contains vanadium 5% percentage by weight of 0.3-0.5% and the iron of surplus;
Batch mixing pulverizes above-mentioned composition as calculated afterwards by batch mixer mixing 30-60 minute;
The wear-resistant ferroalloy powder of one deck is placed first in compacting in mould, then put into the braking clamp matrix, adds wear-resistant ferroalloy powder again, suppresses 10-40 second under 500-700MPa pressure;
With 600-650 ℃ of preheating temperature 1-2 hour, then shaping was pressed again under 150-200MPa in special furnace, increased the adhesion between two kinds of alloys, heated to 1080-1150 ℃ of lower melting 1-3 hour;
Temper and adopt 0.3-0.5MPa water vapour constant temperature to process 5-8 hour after at the uniform velocity being cooled to 550-600 ℃, then cooling.
Described preparation method is:
Make braking clamp matrix blank, the material of matrix is that any conventional iron-based alloys such as common carbon steel, ferrous alloy all can be used for processing the braking clamp matrix; In order to reduce when each brake because the copper in the wear-resistant ferrous alloy is to matrix diffusion problem under the high-temperature condition, also can select copper content is the cupric ferroalloy materials of 1-3%.
Batching, by including by weight percentage, 5% copper, 0.3% bismuth, 0.8% graphite, 0.1% boron nitride, 0.01% titanium, 0.3% nickel, 0.5% silicon, 0.3% zirconium, 1% aluminium, 0.3% the vanadium iron that contains vanadium 5% percentage by weight and the iron of surplus;
Batch mixing is pulverized afterwards as calculated above-mentioned composition by batch mixer and was mixed 30 minutes;
The wear-resistant ferroalloy powder of one deck is placed first in compacting in mould, then put into the braking clamp matrix, adds wear-resistant ferroalloy powder again, and compacting is 30 seconds under 550MPa pressure;
With 600-650 ℃ of preheating temperature 1 hour, then shaping was pressed again under 200MPa, increases the adhesion between two kinds of alloys, heats to 1080-1150 ℃ of lower melting 2 hours in special furnace;
Temper and adopt 0.3MPa water vapour constant temperature to process 5 hours after at the uniform velocity being cooled to 550-600 ℃, then cooling.
Described preparation method is:
Make braking clamp matrix blank, the material of matrix is that any conventional iron-based alloys such as common carbon steel, ferrous alloy all can be used for processing the braking clamp matrix; In order to reduce when each brake because the copper in the wear-resistant ferrous alloy is to matrix diffusion problem under the high-temperature condition, also can select copper content is the cupric ferroalloy materials of 1-3%.
Batching, by including by weight percentage, 10% copper, 0.5% bismuth, 1.2% graphite, 0.3% boron nitride, 0.03% titanium, 0.5% nickel, 0.8% silicon, 0.5% zirconium, 3% aluminium, 0.5% the vanadium iron that contains vanadium 5% percentage by weight and the iron of surplus;
Batch mixing is pulverized afterwards as calculated above-mentioned composition by batch mixer and was mixed 60 minutes;
The wear-resistant ferroalloy powder of one deck is placed first in compacting in mould, then put into the braking clamp matrix, adds wear-resistant ferroalloy powder again, and compacting is 40 seconds under 700MPa pressure;
With 600-650 ℃ of preheating temperature 1 hour, then shaping was pressed again under 200MPa, increases the adhesion between two kinds of alloys, heats to 1080-1150 ℃ of lower melting 2 hours in special furnace;
Temper and adopt 0.5MPa water vapour constant temperature to process 5 hours after at the uniform velocity being cooled to 550-600 ℃, then cooling.
Embodiment 3
Described preparation method is:
Make braking clamp matrix blank, the material of matrix is that any conventional iron-based alloys such as common carbon steel, ferrous alloy all can be used for processing the braking clamp matrix; In order to reduce when each brake because the copper in the wear-resistant ferrous alloy is to matrix diffusion problem under the high-temperature condition, also can select copper content is the cupric ferroalloy materials of 1-3%.
Batching, by including by weight percentage, 8% copper, 0.4% bismuth, 1.0% graphite, 0.2% boron nitride, 0.02% titanium, 0.4% nickel, 0.7% silicon, 0.4% zirconium, 2% aluminium, 0.4% the vanadium iron that contains vanadium 5% percentage by weight and the iron of surplus;
Batch mixing is pulverized afterwards as calculated above-mentioned composition by batch mixer and was mixed 50 minutes;
The wear-resistant ferroalloy powder of one deck is placed first in compacting in mould, then put into the braking clamp matrix, adds wear-resistant ferroalloy powder again, and compacting is 40 seconds under 650MPa pressure;
With 600-650 ℃ of preheating temperature 2 hours, then shaping was pressed again under 200MPa, increases the adhesion between two kinds of alloys, heats to 1080-1150 ℃ of lower melting 2 hours in special furnace;
Temper and adopt 0.3MPa water vapour constant temperature to process 5 hours after at the uniform velocity being cooled to 550-600 ℃, then cooling.
Embodiment 4
Described preparation method is:
Make braking clamp matrix blank, the material of matrix is that any conventional iron-based alloys such as common carbon steel, ferrous alloy all can be used for processing the braking clamp matrix; In order to reduce when each brake because the copper in the wear-resistant ferrous alloy is to matrix diffusion problem under the high-temperature condition, also can select copper content is the cupric ferroalloy materials of 1-3%.
Batching, by including by weight percentage, 10% copper, 0.3% bismuth, 1.0% graphite, 0.2% boron nitride, 0.03% titanium, 0.3% nickel, 0.6% silicon, 0.3% zirconium, 3% aluminium, 0.3% the vanadium iron that contains vanadium 5% percentage by weight and the iron of surplus;
Batch mixing is pulverized afterwards as calculated above-mentioned composition by batch mixer and was mixed 60 minutes;
The wear-resistant ferroalloy powder of one deck is placed first in compacting in mould, then put into the braking clamp matrix, adds wear-resistant ferroalloy powder again, and compacting is 20 seconds under 650MPa pressure;
With 600-650 ℃ of preheating temperature 2 hours, then shaping was pressed again under 180MPa, increases the adhesion between two kinds of alloys, heats to 1080-1150 ℃ of lower melting 2 hours in special furnace;
Temper and adopt 0.3MPa water vapour constant temperature to process 5 hours after at the uniform velocity being cooled to 550-600 ℃, then cooling.
Claims (4)
1. a powder metallurgy braking clamp is characterized in that: include braking clamp matrix and the wear-resistant iron alloy layer that is positioned at the braking clamp matrix surface.
2. powder metallurgy braking clamp according to claim 1, it is characterized in that: the material composition of described wear-resistant iron alloy layer includes the silicon of the titanium of the graphite of the copper of 5-10%, the bismuth of 0.3-0.5%, 0.8-1.2%, the boron nitride of 0.1-0.3%, 0.01-0.03%, the nickel of 0.3-0.5%, 0.5-0.8%, the zirconium of 0.3-0.5%, the aluminium of 1-3%, the vanadium iron that contains vanadium 5% percentage by weight of 0.3-0.5% and the iron of surplus by weight percentage.
3. powder metallurgy braking clamp according to claim 1, it is characterized in that: the thickness of described wear-resistant ferrous alloy layer is the 2-3 millimeter.
4. powder metallurgy braking clamp preparation method is characterized in that:
Make braking clamp matrix blank, the material of matrix is that any conventional iron-based alloys such as common carbon steel, ferrous alloy all can be used for processing the braking clamp matrix; In order to reduce when each brake because the copper in the wear-resistant ferrous alloy is to matrix diffusion problem under the high-temperature condition, also can select copper content is the cupric ferroalloy materials of 1-3%.
Batching, by including by weight percentage the silicon of the titanium of the graphite of the copper of 5-10%, the bismuth of 0.3-0.5%, 0.8-1.2%, the boron nitride of 0.1-0.3%, 0.01-0.03%, the nickel of 0.3-0.5%, 0.5-0.8%, the zirconium of 0.3-0.5%, the aluminium of 1-3%, the vanadium iron that contains vanadium 5% percentage by weight of 0.3-0.5% and the iron of surplus;
Batch mixing pulverizes above-mentioned composition as calculated afterwards by batch mixer mixing 30-60 minute;
The wear-resistant ferroalloy powder of one deck is placed first in compacting in mould, then put into the braking clamp matrix, adds wear-resistant ferroalloy powder again, suppresses 10-40 second under 500-700MPa pressure;
With 600-650 ℃ of preheating temperature 1-2 hour, then shaping was pressed again under 150-200MPa in special furnace, increased the adhesion between two kinds of alloys, heated to 1080-1150 ℃ of lower melting 1-3 hour;
Temper and adopt 0.3-0.5MPa water vapour constant temperature to process 5-8 hour after at the uniform velocity being cooled to 550-600 ℃, then cooling.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102991019A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Powder metallurgy brake caliper |
| CN102994880A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Wear-resistant ferroalloy of powder metallurgy brake caliper and preparation method thereof |
| CN111546006A (en) * | 2020-05-12 | 2020-08-18 | 华能国际电力股份有限公司玉环电厂 | Method for improving abrasion resistance of boiler tube elbow through foamed aluminum |
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|---|---|---|---|---|
| CN102991019A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Powder metallurgy brake caliper |
| CN102994880A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Wear-resistant ferroalloy of powder metallurgy brake caliper and preparation method thereof |
| CN111546006A (en) * | 2020-05-12 | 2020-08-18 | 华能国际电力股份有限公司玉环电厂 | Method for improving abrasion resistance of boiler tube elbow through foamed aluminum |
| CN111546006B (en) * | 2020-05-12 | 2022-04-12 | 华能国际电力股份有限公司玉环电厂 | Method for improving abrasion resistance of boiler tube elbow through foamed aluminum |
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Application publication date: 20130320 |