CN202001520U - Powder metallurgy separation fork - Google Patents
Powder metallurgy separation fork Download PDFInfo
- Publication number
- CN202001520U CN202001520U CN2010206945789U CN201020694578U CN202001520U CN 202001520 U CN202001520 U CN 202001520U CN 2010206945789 U CN2010206945789 U CN 2010206945789U CN 201020694578 U CN201020694578 U CN 201020694578U CN 202001520 U CN202001520 U CN 202001520U
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- China
- Prior art keywords
- powder metallurgy
- withdrawal fork
- separation fork
- main body
- fork
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- Expired - Fee Related
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Abstract
The utility model relates to a powder metallurgy separation fork. A method for manufacturing the powder metallurgy separation fork comprises the following steps of: adding C, Cu, Ni and Mo alloy elements into an iron-based material to manufacture an alloy steel blank by a powder metallurgy technology, sintering at a high temperature, cooling, extruding in a finishing die, locally cutting, trimming and forming. The powder metallurgy separation fork consists of a separation fork main body and two separation fork arms, wherein grooves are oppositely formed at the joints of the fork arms and the main body. Compared with the prior art, the utility model has the advantages that: material consumption is greatly reduced, working time is shortened, the requirements of strength and wear resistance of the separation fork can be met without carburizing and quenching, and the defects of deformation, discoloration and the like caused by quenching in the conventional processing method are overcome. The appearance quality and accuracy of the product are greatly improved, the comprehensive cost of the process and the product is reduced, and production efficiency is improved.
Description
Technical field
The utility model relates to the withdrawal fork of automobile clutch, especially a kind of withdrawal fork that adopts means of a powder metallurgy technique to make.
Background technique
Withdrawal fork is the special-shaped assembly of a kind of cooperation in the automobile clutch.The withdrawal fork of existing automobile clutch adopts 45 steel usually or adopts cast steel to make, and adds and need pass through multiple working procedures such as machine cut processing, carburizing and quenching man-hour.More than these two kinds of manufacture methodes all can process the withdrawal fork that meets usage requirement, but also have significant disadvantages, established technology complexity, expense material, when taking a lot of work, and low through multiple working procedure machine cut product processed up-to-standard rate.When withdrawal fork was made in batches, single-piece materials 1248 grams consume more than the 2h in man-hour, and the last finished product net weight that obtains of processing had only 260 grams.
The model utility content
At the deficiency of existing automobile clutch withdrawal fork, the purpose of this utility model provides a kind ofly can save materials, save man-hour, reduces cost, improves the powder metallurgy withdrawal fork of machining accuracy and the manufacture method of this withdrawal fork.
The purpose of this utility model is achieved by the following technical solution:
The manufacture method of powder metallurgy withdrawal fork, this method may further comprise the steps:
(1) with granularity 〉=100 purpose raw materials by weight batching, wherein, Cu 3-5%, Ni 2-4%, Mo 1.5-3.5%, C 0.8%, and the Fe powder of a small amount of little cured powder and surplus;
(2) above raw material is put into seal container, mix, form alloyed powder;
(3) alloyed powder is filled into presets in the mould, be pressed into the blank of alloy steel with the pressure of 5-9tf/cm2;
(4) with the blank of press forming high temperature sintering, in reducibility gas, be incubated 1.5-3h, be cooled to room temperature by water jacket then with 1150-1200 ℃;
(5) blank of above-mentioned thermal sintering is put into die finish and push, by pushing the boundary dimension that can guarantee product, improve alloy blank dense structure property, thereby improve wear resistance.
(6) blank after the extruding is carried out part cutting, finishing, is shaped.Can make withdrawal fork in batches with economic way by above-mentioned technological method.
As optimal technical scheme of the present utility model, in the alloyed powder of described step (1), the content of Cu is that the content of 3.5-4.5%, Ni is that the content of 2.5-3.5%, Mo is 2-3%.
As optimal technical scheme of the present utility model, the pressure of described step (3) is 6-8tf/cm2.
As optimal technical scheme of the present utility model, the sintering temperature of described step (4) is 1150-1180 ℃, and holding time is 2-2.5h.
A kind of powder metallurgy withdrawal fork is separated yoke and constitutes with two by the withdrawal fork main body, and described two are separated the two ends that yokes are located at the withdrawal fork main body respectively, and the joint of separating yoke and withdrawal fork main body has groove.
As optimal technical scheme of the present utility model, described groove is located at two opposing sides that separate yoke respectively.
As optimal technical scheme of the present utility model, described withdrawal fork main body with separate yoke on have the through hole that diameter does not wait.
As optimal technical scheme of the present utility model, the bottom surface of described withdrawal fork main body is made as plane structure.
The utility model compared with prior art, beneficial effect is as follows:
1. the withdrawal fork of net weight 260g, materials are 310g only;
2. the processing withdrawal fork need be used 10min in man-hour;
3. under same case, need not carburizing and quenching and just can satisfy withdrawal fork intensity and wear resistance requirement, overcome the distortion that existing processing method brings because of quenching, the shortcoming of variable color.
4. product appearance quality, dimensional accuracy and positional accuracy have been improved.
5. the utility model technology and the product overall cost is low, manufacturing efficiency is high.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a sectional structure schematic representation of the present utility model.
Embodiment
The manufacture method of powder metallurgy withdrawal fork, with granularity 〉=100 purpose raw materials by weight ratio, wherein, the Mo of the Cu of 3-5%, the Ni of 2-4%, 1.5-3.5%, 0.8% C, a spot of little cured powder, all the other are the Fe powder, insert in the seal container, mix into alloyed powder.The optimum content of Cu is that the optimum content of 3.5-4.5%, Ni is that the optimum content of 2.5-3.5%, Mo is 2-3% in the alloyed powder.Alloyed powder is filled into presets in the mould, be pressed into the blank of alloy steel with the pressure of 5-9tf/cm2, pressure the best is 6-8tf/cm2.1150-1200 ℃ high temperature sintering of the blank of press forming, and in reducibility gas, be incubated 1.5-3h, sintering temperature is the best with 1150-1180 ℃, holding time is best with 2-2.5h, is cooled to room temperature by water jacket.The blank of thermal sintering is inserted extruding in the die finish, can guarantee the boundary dimension of product by extruding, and can improve alloy blank dense structure property, thereby improve wear resistance.At last alloy blank is carried out a small amount of cutting in part, finishing shaping.Can produce withdrawal fork in batches with economic way by above-mentioned technological method.
Be the embodiment who makes withdrawal fork below, can understand different proportionings and different technology conditions to the withdrawal fork Effect on Performance by embodiment.
In 1 part of Fe powder, add weight proportion 0.8%C, a spot of little cured powder, stir, the metal powder that is mixed with rigidity is filled into and presets in the mould, under 5-9tf/cm2 pressure, be pressed into the blank of alloy, the blank high temperature sintering, temperature is 1150-1200 ℃, and is incubated 1.5-3h in reducibility gas; Be cooled to room temperature at water jacket; The blank that has been shaped is inserted further extruding in the finishing mold, last local a small amount of cutting finishing setting.The carbon steel material withdrawal fork of this embodiment's manufacturing is easy to processing, but still needs to adopt carburizing and quenching to improve the wear resistance of withdrawal fork.
Granularity 〉=100 purpose alloy powders are filled in the prefabricated molds, stir through sealing, each composition is 3.5% Cu, 2.5% Ni, 2% Mo, 0.8% C, a spot of little cured powder by weight ratio, and all the other are the Fe powder.Under 7tf/cm2 pressure, be pressed into the blank of alloyed steel matter; Blank is with 1180 ± 2 ℃ high temperature sintering, and is incubated 2.5h in reducibility gas; Be cooled to room temperature by water jacket; The blank that has been shaped is inserted further extruding in the die finish; Last local a small amount of cutting, finishing setting.
Present embodiment is compared with embodiment 1, can save great deal of raw materials, save machining period, improves the machining accuracy of product, improves the tensile strength and the wear resistance of product.
Granularity 〉=100 purpose alloy powders are filled in the prefabricated molds, and each composition is by weight ratio: 4.5% Cu, 3% Ni, 3% Mo, 0.8% C, a spot of little cured powder, and all the other are the Fe powder; Under 8tf/cm2 pressure, be pressed into the blank of alloyed steel matter; Blank is with 1180 ± 2 ℃ high temperature sintering, and is incubated 2.5h in reducibility gas; Be cooled to room temperature by water jacket; The blank that has been shaped is inserted further extruding in the die finish; Last local a small amount of cutting, finishing setting.
Present embodiment is compared with embodiment 1, can save great deal of raw materials, saves machining period, saves product cost, and in the time of the tensile strength of raising product and wear resistance, the impact toughness index also increases.
As depicted in figs. 1 and 2, a kind of powder metallurgy withdrawal fork, separating yoke 2 by withdrawal fork main body 1 with two constitutes, described two are separated the two ends that yoke 2 is located at withdrawal fork main body 1 respectively, the joint of separating yoke 2 and withdrawal fork main body 1 has groove 3, and this groove 3 is located at two opposing sides that separate yokes 2 respectively.Described withdrawal fork main body 1 with separate yoke 2 on have the through hole 4 and 5 that diameter does not wait; The bottom surface 6 of withdrawal fork main body 1 is made as plane structure.
Claims (4)
1. powder metallurgy withdrawal fork is separated yoke and constitutes with two by the withdrawal fork main body, and it is characterized in that: described two are separated the two ends that yokes are located at the withdrawal fork main body respectively, and the joint of separating yoke and withdrawal fork main body has groove.
2. powder metallurgy withdrawal fork according to claim 1 is characterized in that: described groove is located at two opposing sides that separate yoke respectively.
3. powder metallurgy withdrawal fork according to claim 1 is characterized in that: described withdrawal fork main body with separate yoke on have the through hole that diameter does not wait.
4. powder metallurgy withdrawal fork according to claim 1 is characterized in that: the bottom surface of described withdrawal fork main body is made as plane structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206945789U CN202001520U (en) | 2010-12-31 | 2010-12-31 | Powder metallurgy separation fork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206945789U CN202001520U (en) | 2010-12-31 | 2010-12-31 | Powder metallurgy separation fork |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202001520U true CN202001520U (en) | 2011-10-05 |
Family
ID=44704263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206945789U Expired - Fee Related CN202001520U (en) | 2010-12-31 | 2010-12-31 | Powder metallurgy separation fork |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202001520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052459A (en) * | 2010-12-31 | 2011-05-11 | 江苏双峰粉末冶金制品有限公司 | Powder-metallurgy release yoke and manufacturing method thereof |
-
2010
- 2010-12-31 CN CN2010206945789U patent/CN202001520U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052459A (en) * | 2010-12-31 | 2011-05-11 | 江苏双峰粉末冶金制品有限公司 | Powder-metallurgy release yoke and manufacturing method thereof |
| CN102052459B (en) * | 2010-12-31 | 2014-02-12 | 江苏双峰粉末冶金制品有限公司 | Powder-metallurgy release yoke and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20171231 |