CN107321988A - Combined sintering technique after a kind of split type shaping of powder metallurgy - Google Patents
Combined sintering technique after a kind of split type shaping of powder metallurgy Download PDFInfo
- Publication number
- CN107321988A CN107321988A CN201710417900.XA CN201710417900A CN107321988A CN 107321988 A CN107321988 A CN 107321988A CN 201710417900 A CN201710417900 A CN 201710417900A CN 107321988 A CN107321988 A CN 107321988A
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- CN
- China
- Prior art keywords
- parts
- split type
- sintering
- powder
- degreasing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Abstract
Combined sintering technique, concrete technology step after a kind of split type shaping of powder metallurgy of the present invention:Step 1, raw material prepare:Powder used in metallurgy powder base material and additive are got out, and powder base material and additive are mixed to uniformly;The split type shaping of step 2, parts:One complex parts is disassembled into two or more simple parts, and the two or multiple simple parts are formed separately;Degreasing after step 3, combination:By two or more simple part combinations after shaping into needs component structural, and to after the combination parts carry out degreasing;Step 4, combined sintering:The parts that degreasing is completed are sintered;Step 5, subsequent treatment:Subsequent treatment is carried out to the parts that sintering is completed.Powder metallurgy production application scope can be expanded, the production cost of complicated parts is really effectively reduced, it is adaptable to which complicated powdered metal parts that can not be once-forming, or several powdered metal parts need to be reliably connected situation together.
Description
Technical field
The present invention relates to combined sintering technique after a kind of split type shaping of powder metallurgy.
Background technology
Powder metallurgy be with metal dust (or mixture of metal dust and non-metal powder) as raw material, by into
The processes such as shape, sintering, produce the industrial technology of metal (or composite) all kinds product.At present, PM technique has been
The fields such as machinery, traffic, weapons, information are widely used in, sintered metal product has good precision height, stability, energy-conservation, performance excellent
It is different, be adapted to produce in enormous quantities the advantages of.In the complex parts that some tradition machineries are processed and casting method can not be prepared, it is also possible to
PM technique is manufactured.But the parts of prior powder metallurgy manufacture can be influenceed by metallurgy forming process for powder, some
Parts that are complicated, not meeting metallurgy forming process for powder requirement, can not just be manufactured with PM technique at this stage.
The content of the invention
The technical problem to be solved in the present invention is:In order to overcome the deficiencies in the prior art, there is provided a kind of powder smelting
Combined sintering technique after the split type shaping of gold, can expand powder metallurgy production application scope, really effectively reduce complicated zero
The production cost of part, it is adaptable to complicated powdered metal parts that can not be once-forming, or several powdered metal parts
Situation together need to be reliably connected.
The technical solution adopted for the present invention to solve the technical problems is:Combine and burn after a kind of split type shaping of powder metallurgy
Knot technique, concrete technology step is:
Step 1, raw material prepare:Get out powder used in metallurgy powder base material and additive, and by powder base material and addition
Agent is mixed to uniformly;
The split type shaping of step 2, parts:One complex parts is disassembled into two or more simple parts, and it is right
The two or multiple simple parts are formed separately;
Degreasing after step 3, combination:By two or more simple part combinations after shaping into needs component structural,
And degreasing is carried out to the parts after the combination;
Step 4, combined sintering:The parts that degreasing is completed are sintered;
Step 5, subsequent treatment:Subsequent treatment is carried out to the parts that sintering is completed.
Further specifically, in above-mentioned technical proposal, additive in the step 1 is adhesive, lubricant, wear-resistant
Combination more than one or both of agent, reinforcing agent and processing aid.
Further specifically, in above-mentioned technical proposal, the forming mode in the step 2 use it is compressing or
It is injection moulding.
Further specifically, in above-mentioned technical proposal, subsequent treatment in the step 5 is finishing, immersion oil, rolling,
Combination more than one or both of forging, machining, heat treatment and plating.
Further specifically, in above-mentioned technical proposal, the complex partses are made up of stainless steel material, in parts
Injection moulding is used in split type forming step, after combining using skimming processes twice in defatting step, in combined sintering step
Vacuum-sintering is used in rapid, and uses two-step sintering process.
The beneficial effects of the invention are as follows:Original part for leading to not powder metallurgy production because that can not shape can be divided
Combined sintering powder metallurgy is produced after body shaping;Combined sintering powder metallurgy after split shaping can be carried out to sufficiently complex part
Production, effectively reduction complex parts shape difficulty and improve complex parts forming quality;Can be fastened to each other to original several needs
It is integral sintered after the combination of the part progress degreasing blank of the PM technique manufacture of position, reduce PM technique manufacture
Subsequent fixed work between parts;The scope that PM technique prepares parts is effectively increased, complex parts powder smelting is reduced
The cost of technology for gold manufacture.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the overall structure diagram with helicla flute stainless steel lock core;
Fig. 2 is the structural representation of the split part one with helicla flute stainless steel lock core;
Fig. 3 is the structural representation of the split part two with helicla flute stainless steel lock core.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Combined sintering technique after a kind of split type shaping of powder metallurgy, concrete technology step is:
Step 1, raw material prepare:Required according to the difference of product, get out powder used in metallurgy powder base material and additive,
Additive is combination more than one or both of adhesive, lubricant, antiwear additive, reinforcing agent and processing aid etc., and will
Powder base material and additive are mixed to uniformly according to certain proportion;
The split type shaping of step 2, parts:Can not be once-forming for complicated and existing forming technology zero
Part, can carry out structure to it and disassemble, i.e., a complex partses be disassembled into two or more simple parts, and to the two
Or multiple simple parts are formed separately, forming mode uses compressing or injection moulding etc.;
Degreasing after step 3, combination:By two or more simple part combinations after shaping into needs component structural,
And degreasing is carried out to the parts after the combination;
Step 4, combined sintering:The parts that degreasing is completed, which are put into sintering furnace, to be sintered, in suitable sintering furnace
It is integral sintered by the high temperature of certain time under temperature, each part being originally formed separately is fused integrally, complexity zero is reached
The purpose of part powder metallurgically manufacturing;
Step 5, subsequent treatment:Required according to the difference of product, subsequent treatment is carried out to the parts that sintering is completed, subsequently
Combination more than one or both of finishing, immersion oil, rolling, forging, machining, heat treatment and plating etc. is processed as, finally
Obtain the effect that product needs.
Fig. 1~3 are seen, for split part one and split part two with helicla flute stainless steel lock core, in parts
Injection moulding is used in split type forming step, forming temperature is 160 DEG C, and injection time is 1s, and injection pressure is 80Mpa, is protected
The pressure time is 5s, and cool time is 20s.Degreasing twice, first time degreasing are used in defatting step after combining:0.625℃/
Min, is heated to 230~260 DEG C, 2~3h of soaking time, and most of binding agent can be sloughed in first time skimming processes;Second
Secondary degreasing:1 DEG C/min, it is heated to 550~600 DEG C, 3~4h of soaking time can remove remnants' in second of skimming processes
Binding agent.Vacuum-sintering is used in combined sintering step, also using two-step sintering process, first sintering:Heating rate 2
DEG C/min, 920~950 DEG C/min, 1~1.5h of soaking time are heated to, first sintering process can ensure to remove institute completely
Some binding agents, the how empty body constituted as powder particle and hole;Second of sintering, 5 DEG C/min of heating rate, sintering temperature
1280~1330 DEG C, 1~1.5h of soaking time.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (5)
1. combined sintering technique after a kind of split type shaping of powder metallurgy, it is characterized in that:Concrete technology step is:
Step 1, raw material prepare:Powder used in metallurgy powder base material and additive are got out, and powder base material and additive are mixed
Conjunction is stirred until homogeneous;
The split type shaping of step 2, parts:One complex parts is disassembled into two or more simple parts, and to this two
Individual or multiple simple parts are formed separately;
Degreasing after step 3, combination:By two or more simple part combinations after shaping into needs component structural, it is and right
Parts after the combination carry out degreasing;
Step 4, combined sintering:The parts that degreasing is completed are sintered;
Step 5, subsequent treatment:Subsequent treatment is carried out to the parts that sintering is completed.
2. combined sintering technique after the split type shaping of a kind of powder metallurgy according to claim 1, it is characterized in that:The step
Additive in rapid 1 is combination more than one or both of adhesive, lubricant, antiwear additive, reinforcing agent and processing aid.
3. combined sintering technique after the split type shaping of a kind of powder metallurgy according to claim 1, it is characterized in that:The step
Forming mode in rapid 2 uses compressing or injection moulding.
4. combined sintering technique after the split type shaping of a kind of powder metallurgy according to claim 1, it is characterized in that:The step
Subsequent treatment in rapid 5 is more than one or both of finishing, immersion oil, rolling, forging, machining, heat treatment and plating
Combination.
5. combined sintering technique after the split type shaping of a kind of powder metallurgy according to claim 1, it is characterized in that:It is described multiple
Miscellaneous parts are made up of stainless steel material, and injection moulding is used in the split type forming step of parts, and degreasing after combining is walked
Using skimming processes twice in rapid, vacuum-sintering is used in combined sintering step, and use two-step sintering process.
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CN201710417900.XA CN107321988A (en) | 2017-06-06 | 2017-06-06 | Combined sintering technique after a kind of split type shaping of powder metallurgy |
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CN201710417900.XA CN107321988A (en) | 2017-06-06 | 2017-06-06 | Combined sintering technique after a kind of split type shaping of powder metallurgy |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108339978A (en) * | 2017-12-29 | 2018-07-31 | 网云(武汉)三维科技股份有限公司 | A kind of equipment and sintering process of printing 3D metal materials |
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CN102371355A (en) * | 2010-08-11 | 2012-03-14 | 施瓦本冶金工程汽车有限公司 | Sintered Gear Wheel Composite And Method For Its Production |
CN103056372A (en) * | 2013-01-29 | 2013-04-24 | 洛阳高新四丰电子材料有限公司 | Preparation method of Wolfram-Nickel-Ferrum (W-Ni-Fe) alloy parts |
CN104338927A (en) * | 2013-07-29 | 2015-02-11 | 扬州天健机械制造有限公司 | Automobile shock absorber piston and production technique thereof |
CN105729080A (en) * | 2016-02-18 | 2016-07-06 | 柳州东侯生物能源科技有限公司 | Machining method of biomass fuel breaking cutter |
CN106041090A (en) * | 2016-07-18 | 2016-10-26 | 安徽奥泰粉末冶金有限公司 | Powder metallurgical lock cylinder pulling head and production process thereof |
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Patent Citations (6)
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US20110250521A1 (en) * | 2008-12-30 | 2011-10-13 | Doosan Heavy Industries & Construction Co., Ltd | Method of manufacturing anode for in-situ sintering for molten carbonate fuel cell |
CN102371355A (en) * | 2010-08-11 | 2012-03-14 | 施瓦本冶金工程汽车有限公司 | Sintered Gear Wheel Composite And Method For Its Production |
CN103056372A (en) * | 2013-01-29 | 2013-04-24 | 洛阳高新四丰电子材料有限公司 | Preparation method of Wolfram-Nickel-Ferrum (W-Ni-Fe) alloy parts |
CN104338927A (en) * | 2013-07-29 | 2015-02-11 | 扬州天健机械制造有限公司 | Automobile shock absorber piston and production technique thereof |
CN105729080A (en) * | 2016-02-18 | 2016-07-06 | 柳州东侯生物能源科技有限公司 | Machining method of biomass fuel breaking cutter |
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CN108339978A (en) * | 2017-12-29 | 2018-07-31 | 网云(武汉)三维科技股份有限公司 | A kind of equipment and sintering process of printing 3D metal materials |
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Application publication date: 20171107 |
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