CN102962457B - Method for manufacturing rotating shuttle through warm flow compaction forming method - Google Patents
Method for manufacturing rotating shuttle through warm flow compaction forming method Download PDFInfo
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- CN102962457B CN102962457B CN201210491743.4A CN201210491743A CN102962457B CN 102962457 B CN102962457 B CN 102962457B CN 201210491743 A CN201210491743 A CN 201210491743A CN 102962457 B CN102962457 B CN 102962457B
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- gas pipeline
- rotating shuttle
- degreasing
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Abstract
The invention discloses a method for manufacturing a rotating shuttle through a warm flow compaction forming method. The rotating shuttle adopts the following alloy material: Fe2NiMo, FeCrMo or FeCr; and the manufacturing method of the rotating shuttle comprises the following steps: firstly, adopting an atomization method to produce raw material alloy powder, secondly, adding raw material alloy nanometer fine powder and adhesive containing surface active agent and plasticizer into the raw material alloy powder to perform mixed refining pelletizing, thirdly, adopting the warm flow compaction forming method to perform rotating shuttle compression molding, fourthly, performing degreasing and sintering in a sintering furnace, and fifthly, performing surface shaping treatment, so as to achieve the required size. The method has the advantages that Fe2NiMo, FeCrMo or FeCr is adopted as raw material, so that composition segregation and unnecessary internal impurities are eliminated, and the sintering and shrinkage uniformity of the product is good.
Description
Technical field
The present invention relates to sewing machine accessory, relate in particular to the rotating shuttle in sewing machine.
Background technology
Rotating shuttle is one of critical component in sewing device equipment, complex structure.The processing method of outer shuttle adopts mechanical processing method to produce conventionally.Patent 201110132497.9 adopts powder metallurgic method processing.
Mechanical processing method cannot be realized on a large scale, low-cost production, and mechanical processing method metal material utilization rate is low, adopt injection moulding to produce because raw material granularity is tiny, price is high, product cost is high, and injection moulding processing technology due to adopt additive many, product size precision supportability is poor.
Summary of the invention
Technical problem to be solved by this invention is just to provide a kind of method of utilizing the warm flow compaction method of forming to manufacture rotating shuttle, and technique is simple, and production efficiency is high, and metal material utilization rate is high.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of method of utilizing the warm flow compaction method of forming to manufacture rotating shuttle, it is characterized in that: the alloy material that described rotating shuttle adopts is Fe2Ni Mo, FeCrMo or FeCr, and the manufacture method of this rotating shuttle comprises the steps:
(1) adopt atomization raw materials for production alloy powder;
(2) bonding agent that add raw alloy nanometer fine powder in raw material alloy powder, contains surfactant and plasticizer carries out mixing granulation; This raw alloy nanometer fine powder refers to the alloy powder being made up of associated alloys material of alloying.
(3) adopt warm flow compaction moulding process to carry out rotating shuttle compression molding;
(4) degreasing sintered in sintering furnace;
(5) surperficial Shape correction reaches required size.
As preferably, it is carbonyl iron dust that the raw material alloy powder of described Fe2Ni Mo contains 0.2～0.3%Mo powder, 1.5～2.5% carbonyl nickel powders, surplus by weight.
As preferably, it is carbonyl iron dust that the raw material alloy powder of described FeCrMo contains 0.2～0.3%Mo powder, 1.5～2.5%Cr powder, surplus by weight.
As preferably, the raw material alloy powder of described FeCr contains 0.5～1.5%Cr powder by weight, surplus is carbonyl iron dust.
As preferably, the granularity of described raw material alloy powder is that between 10 nanometers to 200 micron, the granularity of raw alloy nanometer fine powder is less than 1 micron, its account for raw material alloy powder weight 1 ~ 2%.
As preferably, described bonding agent adopts polyethylene glycol, polyacetals and stearic mixture, or adopts Tissuemat E, paraffin, polyamide, stearic mixture, or adopts Tissuemat E, palm wax, stearic mixture; The addition of described bonding agent accounts for 1 ~ 5% of raw material alloy powder weight.
As preferably, described rotating shuttle carries out warm flow compaction moulding, 40 ~ 160 DEG C of mold temperatures within the scope of 60 ~ 180 DEG C of temperature.
As preferably, the condition of sintering furnace sintering is under vacuum or restitutive protection's atmosphere, and 800 ~ 1300 DEG C are carried out degreasing sintered.
As preferably, sintering adopts continuous sintering furnace, this sintering furnace comprises a combined type body of heater, the burner of described body of heater is provided with liftable fire door and charging aperture, stove tail is provided with liftable fire door and discharging opening, described body of heater is disposed with degreasing section from burner to stove tail, sintering stage, slow cooling section, cooling section, described degreasing section is provided with at least one inert gas pipeline, the gas outlet subsection setup of described inert gas pipeline is in degreasing section burner hearth, the section of degreasing is simultaneously provided with at least one control carbon gas pipeline, the gas outlet subsection setup of described control carbon gas pipeline is in degreasing section burner hearth.
As preferably, described inert gas pipeline enters burner hearth from degreasing section left end, and described control carbon gas pipeline enters burner hearth from degreasing section right-hand member, and described inert gas pipeline and control carbon gas pipeline are provided with flow control valve.
It is raw material that the present invention adopts Fe2Ni Mo, FeCrMo or FeCr, has eliminated component segregation and unnecessary intrinsic contaminants, product sintering shrinkage high conformity; Raw material powder particle size carries out proportioning adjusting as required between nanometer to 80 micron, and cost of material is significantly reduced, and product density, performance are satisfied the demand.
In addition, the present invention sets up shaping step, eliminates the product rejection causing because of micro-deformation, improves product percent of pass, reduces product rejection rate.
Thereby technique of the present invention is simple, production efficiency is high, and metal material utilization rate is high.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is sintering sintering furnace structural representation used;
Fig. 2 is degreasing section inert gas pipeline structural representation;
Fig. 3 is the cooling vent hole structure schematic diagram of degreasing section;
Fig. 4 is the long-pending wax jar structure schematic diagram of degreasing section;
Fig. 5 is slow cooling section structural representation;
Fig. 6 is cooling section structural representation;
Fig. 7 is cooling section admission line structural representation;
Fig. 8 is gas distribution pipe structural representation in cooling section admission line;
Fig. 9 is temperature alarming device structural representation;
Figure 10 is temperature alarming device control principle schematic diagram.
Detailed description of the invention
Illustrate a kind of embodiment that utilizes the warm flow compaction method of forming to manufacture the method for rotating shuttle of the present invention below.
Example 1,
1, adopt polyethylene glycol (PEG), polyacetals and stearic acid as bonding agent, addition 1 ~ 5%.Add nanometer attritive powder as activated sintering agent, 2 ~ 80 microns of powder size scopes, through mixing, granulate after, as warm flow compaction shaping raw material.
2, within the scope of 60 ~ 200 DEG C of temperature, carry out warm flow compaction moulding, 40 ~ 120 DEG C of mould temperature, mould is combined type collapsible mold, inner chamber has final products external form.
3, by warm flow compaction powder for molding embryo part under vacuum or restitutive protection's atmosphere, 800 ~ 1300 DEG C are carried out sintering, obtain profiled piece embryo part of the present invention.
4, carry out necessary inspection, fine distortion place is carried out to shaping.
5, according to specific needs, shaping piece is carried out to micro-machined, to adapt to the differential demand of different groups.
Example 2
1, adopt Tissuemat E, paraffin, polyamide, stearic acid as bonding agent, addition 1 ~ 5%.Add nanometer attritive powder as activated sintering agent, 2 ~ 80 microns of powder size scopes, through mixing, granulate after, as warm flow compaction shaping raw material.
2, within the scope of 60 ~ 200 DEG C of temperature, carry out warm flow compaction moulding, 40 ~ 100 DEG C of mold temperatures.Adopt combined type collapsible mold, inner chamber has final products external form.
3, by warm flow compaction powder for molding embryo part under vacuum or restitutive protection's atmosphere, 800 ~ 1300 DEG C are carried out sintering, obtain profiled piece embryo part of the present invention.
4, carry out necessary inspection, fine distortion place is carried out to shaping.
According to specific needs, shaping piece is carried out to micro-machined, to adapt to the differential demand of different groups.
Example 3,
1, use Tissuemat E, palm wax, stearic acid as bonding agent, addition 1 ~ 5%.Add nanometer attritive powder as activated sintering agent, 2 ~ 80 microns of powder size scopes, through mixing, granulate after, as warm flow compaction shaping raw material.
2, within the scope of 60 ~ 180 DEG C of temperature, carry out warm flow compaction moulding, 40 ~ 160 DEG C of mold temperatures.Adopt combined type collapsible mold, inner chamber has final products external form.
3, by warm flow compaction powder for molding embryo part under vacuum or restitutive protection's atmosphere, 800 ~ 1300 DEG C are carried out sintering, obtain profiled piece embryo part of the present invention.
4, carry out necessary inspection, fine distortion place is carried out to shaping.
5, according to specific needs, shaping piece is carried out to micro-machined, to adapt to the differential demand of different groups.
Rotating shuttle being carried out to sintering sintering furnace used below makes and illustrating.
As shown in Figure 1, for the continuous sintering furnace of the present invention's employing, it comprises a combined type body of heater, the burner of described body of heater is provided with liftable fire door and charging aperture 6, stove tail are provided with liftable fire door and discharging opening 60, and described body of heater is disposed with degreasing section 1, sintering stage 2, slow cooling section 3, cooling section 4 from burner to stove tail.Described furnace binding is meshbeltfurnace or stepping beam type continuous oven; When employing pushes away boat structure sintering furnace, material boat size and fire box temperature are integral multiple relation.
Between described charging aperture 6 and discharging opening 60, adopt external cycling mechanism.This outer circulation mechanism adopts sprocket wheel, belt or gear drive to realize.
Described body of heater is provided with sample tap 150 on the linkage section 15 of degreasing section and sintering stage, and described sample tap adopts upper shed or side opening mode.This sample tap adopts mechanical pull bar or bolted mode to open or close sample tap.
Be the concrete structure of degreasing section as shown in Figures 2 to 4, described degreasing section is provided with at least one inert gas pipeline 11, the gas outlet subsection setup of described inert gas pipeline is in degreasing section burner hearth 13, the section of degreasing is simultaneously provided with at least one control carbon gas pipeline 12, and the gas outlet subsection setup of described control carbon gas pipeline is in degreasing section burner hearth 13.Inert gas pipeline 11 and control carbon gas pipeline 12 can arrange a row or multi-row gas outlet vertically.In Fig. 2, inert gas pipeline 11 is provided with three, is respectively the first inert gas pipeline 110, the second inert gas pipeline 111, the 3rd inert gas pipeline 112, and it stretches into the length difference of burner hearth 13 inside.Control carbon gas pipeline 12 also can adopt the structure identical with inert gas pipeline 11.The adjusting of control carbon gas flow direction can be controlled carbon gas pipeline 12 by rotation and carries out, control carbon gas pipeline two ends are rotatably connected on tuning movable joint, specifically can adopt thread connection, control carbon gas pipeline is provided with handle, turning handle, gas outlet direction is rotated and is changed with control carbon gas pipeline 12, certainly, in order to realize the adjusting of gas outlet direction of inert gas pipeline 11, it also can adopt tuning movable joint structure.
Described degreasing section is provided with at least two cooling passages 131 that are communicated with flue and body of heater outer air, and this cooling passage is the adjustable passage that can close and regulate throughput.This cooling passage 131 is communicated with degreasing section flue through heat-insulation layer 130.Passage 131 adopts natural ventilation mode.In the time that needs regulate zone temperatures, can realize by the openings of sizes of opening this section upper shed, can cover opening with a rotating baffle plate, flap shutter is adjustable openings of sizes.
Control carbon gas in described control carbon gas pipeline adopts decarburization atmosphere, and this decarburization atmosphere is H
2or H
2o or decomposed ammonia body or CO
2or O
2also or the combination of above-mentioned gas.
Described degreasing section front end below arranges long-pending wax tank 14, and described long-pending wax tank is provided with grafting wax mouth 140, inert gas entrance 141 and exhaust-valve 142.
Be illustrated in figure 5 the concrete structure of slow cooling section, described slow cooling section 3 arranges air-cooled jacket structured, be set to jacket pipe structure by slow cooling section, outer tube sleeve on inner pipe, between outer tube and inner tube, have certain space to form air-cooled chuck inner chamber 30, described air-cooled chuck inner chamber 30 is inwardly dried by an air blast 31.
Be cooling section concrete structure as shown in Figure 6 to 8, described cooling section arranges a liftable separated door 40 cooling section is separated, described cooling section in liftable separated door front side and rear side be respectively equipped with admission line 41, the admission line of described separated door front side is used for carrying reducibility gas, and the admission line of described separated door rear side is used for carrying inert gas.
Wherein, described admission line 41 comprises that one extends transversely into the gas distribution pipe 411 of cooling section, and these gas distribution pipe two ends are slip-knot 413, and gas distribution pipe is provided with several gas outlets 412.Slip-knot and gas distribution pipe adopt spiral marking connection, in the time that needs are adjusted airflow direction, realize by rotating gas distribution pipe angle.
As shown in Figure 9 and Figure 10, describe as an example of the temperature alarming device in degreasing section example, heat-insulation layer 130 outside degreasing section burner hearth 13 is provided with a main temperature thermocouple 51 and a tracking and temperature testing thermocouple 50, described main temperature thermocouple and and tracking and temperature testing thermocouple be connected with switch board 5, switch board is provided with a tracking overtemperature alarm 52.The data that switch board 5 internal controller record according to main temperature thermocouple 51 and a tracking and temperature testing thermocouple 50 judge whether overtemperature, if overtemperature is controlled and followed the tracks of overtemperature alarm 52 and report to the police.
Temperature alarming device on sintering stage is identical with the temperature alarming device structure in above-mentioned degreasing section.
In addition, the heater of described degreasing section and sintering stage adopts silicon carbide heater, and described sintering furnace arranges sintered dimensions image acquistion system at degreasing section, sintering stage.This system has photoelectric coupling mechanism, has optical system, signal processing system, sintering shrinkage curve setting program and pushes away the compositions such as boat time setting program.
Slow cooling section is provided with protective gas admission line 32, and as the use that passes into sintering gas shield gas, slow cooling section arranges thermocouple temperature measuring apparatus, for monitoring the temperature of slow cooling section, is convenient to adjust in time cooling velocity, reduces deformation of products.Beneficial effect of the present invention is:
1, set up inert gas pipeline in the segmentation of degreasing section, pipeline can carry out flow and airflow direction adjusting at different warm areas as required;
2, for avoiding the uniformity in airflow influence temperature field, establish cooling passage in degreasing section flue outside, avoid burner hearth internal temperature uncontrollable;
3, in degreasing section, control carbon gas pipeline is set, control carbon gas can be adjusted at different sections as required, and after control carbon gas enters burner hearth inside, airflow direction is adjustable;
4, control carbon gas adopts decarburization atmosphere, and these atmosphere comprise H
2, H
2o, decomposed ammonia body, CO
2, O
2and their combination, to adapt to control carbon needs.Containing O
2mist gas ratio is controlled at non-explosive range.
5,, for guaranteeing size uniform, adopt meshbeltfurnace, stepping beam type continuous oven; While pushing away boat structure sintering furnace, material boat size and fire box temperature are integral multiple relation.
6, in slow cooling section, (sintering stage and cooling section) air inlet arranges temperature control means, controls cooling velocity, reduces deformation of products;
7, at cooling section, separated door is set, separated door leading portion configuration reducibility gas pipeline, the current potential when ensureing that product is cooling;
8,, for guaranteeing to separate sneaking into of oxidizing gas when door opened, inert gas seal measure is set, oxidation while causing that to avoid oxidizing atmosphere to enter separated door leading portion product is cooling separating fire door back segment.
9,, for avoiding the inhomogeneous deformation of products that causes in temperature field of product degreasing and sintering process, preferably high-quality Temperature Control Measures, in control accuracy section temperature difference ± 5 of temperature DEG C.These measures comprise that high-quality carborundum heater, symmetrically arranged TEMP detect tracking measure;
10, controlled for effectively realizing sintering process size, at degreasing section, sintering stage, sintered dimensions image acquistion system is set, from motion tracking product sintered dimensions situation of change, to adjust degreasing, sintering process system;
11,, for avoiding burner to amass wax, long-pending wax tank body is set under burner; On long-pending wax tank body, inert gas pipeline is set, to ensure that de-waxing process does not need blowing out operation, nonoxidizing gas destroys system balancing;
12, be implementation procedure continuous production, adopt external cycling mechanism, guarantee the operation of system continuous circulation.
13, at the follow-up sample tap that arranges of degreasing section, be convenient to sample analysis skimming processes situation and adjust.
The present invention is applicable to the continuous degreasing sintering of cerul, plasticity system, and it is controlled that sintering process can realize carbon, and atmosphere is controlled, temperature is controlled, and product size is controlled, and Product Precision is high, can match in excellence or beauty with vacuum drying oven sintered products.
Claims (5)
1. a method of utilizing the warm flow compaction method of forming to manufacture rotating shuttle, it is characterized in that: the alloy material that described rotating shuttle adopts is Fe2Ni Mo, FeCrMo or FeCr, it is carbonyl iron dust that the raw material alloy powder of described Fe2Ni Mo contains 0.2～0.3%Mo powder, 1.5～2.5% carbonyl nickel powders, surplus by weight, it is carbonyl iron dust that the raw material alloy powder of described FeCrMo contains 0.2～0.3%Mo powder, 1.5～2.5%Cr powder, surplus by weight, and the raw material alloy powder of described FeCr contains 0.5～1.5%Cr powder by weight, surplus is carbonyl iron dust; The manufacture method of this rotating shuttle comprises the steps:
(1) adopt atomization raw materials for production alloy powder;
(2) bonding agent that add raw alloy nanometer fine powder in raw material alloy powder, contains surfactant and plasticizer carries out mixing granulation;
(3) adopt warm flow compaction moulding process to carry out rotating shuttle compression molding;
(4) degreasing sintered in sintering furnace;
(5) surperficial Shape correction reaches required size;
Sintering adopts continuous sintering furnace, this sintering furnace comprises a combined type body of heater, the burner of described body of heater is provided with liftable fire door and charging aperture, stove tail is provided with liftable fire door and discharging opening, described body of heater is disposed with degreasing section from burner to stove tail, sintering stage, slow cooling section, cooling section, described degreasing section is provided with at least one inert gas pipeline, the gas outlet subsection setup of described inert gas pipeline is in degreasing section burner hearth, the section of degreasing is simultaneously provided with at least one control carbon gas pipeline, the gas outlet subsection setup of described control carbon gas pipeline is in degreasing section burner hearth, described inert gas pipeline enters burner hearth from degreasing section left end, described control carbon gas pipeline enters burner hearth from degreasing section right-hand member, described inert gas pipeline and control carbon gas pipeline are provided with flow control valve, inert gas pipeline is provided with three, be respectively the first inert gas pipeline, the second inert gas pipeline, the 3rd inert gas pipeline, it stretches into the length difference of burner hearth inside, control carbon gas pipeline also adopts the structure identical with inert gas pipeline, control carbon gas pipeline two ends are rotatably connected on tuning movable joint, the adjusting of control carbon gas flow direction is controlled carbon gas pipeline by rotation and is carried out, described degreasing section is provided with at least two cooling passages that are communicated with flue and body of heater outer air, this cooling passage is the adjustable passage that can close and regulate throughput, this cooling passage is communicated with degreasing section flue through heat-insulation layer, passage adopts natural ventilation mode, in the time that needs regulate zone temperatures, realize by the openings of sizes of opening this section upper shed.
2. a kind of warm flow compaction method of forming of utilizing according to claim 1 is manufactured the method for rotating shuttle, it is characterized in that: the granularity of described raw material alloy powder is between 10 nanometers to 200 micron.
3. a kind of method of utilizing the warm flow compaction method of forming to manufacture rotating shuttle according to claim 2, it is characterized in that: described bonding agent adopts polyethylene glycol, polyacetals and stearic mixture, or adopt Tissuemat E, paraffin, polyamide, stearic mixture, or adopt Tissuemat E, palm wax, stearic mixture; The addition of described bonding agent accounts for 1～5% of raw material alloy powder weight.
4. a kind of warm flow compaction method of forming of utilizing according to claim 2 is manufactured the method for rotating shuttle, it is characterized in that: described rotating shuttle carries out warm flow compaction moulding, 40～160 DEG C of mold temperatures within the scope of 60～180 DEG C of temperature.
5. a kind of method of utilizing the warm flow compaction method of forming to manufacture rotating shuttle according to claim 2, is characterized in that: the condition of sintering furnace sintering is under vacuum or restitutive protection's atmosphere, and 800～1300 DEG C are carried out degreasing sintered.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210491743.4A CN102962457B (en) | 2012-11-27 | 2012-11-27 | Method for manufacturing rotating shuttle through warm flow compaction forming method |
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|---|---|---|---|
| CN201210491743.4A CN102962457B (en) | 2012-11-27 | 2012-11-27 | Method for manufacturing rotating shuttle through warm flow compaction forming method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0456707A (en) * | 1990-06-26 | 1992-02-24 | Daido Steel Co Ltd | Continuous type vacuum furnace |
| JP2003328006A (en) * | 2002-05-13 | 2003-11-19 | Ishikawajima Harima Heavy Ind Co Ltd | Continuous baking unit for porous body sheet of heat- resistant alloy, and method for manufacturing the same |
| CN102011276A (en) * | 2010-10-28 | 2011-04-13 | 宁波市鄞州勇耀缝制机械有限公司 | Process for manufacturing rotating shuttle inner shuttle bottom supporting structure |
| CN102500757A (en) * | 2011-11-09 | 2012-06-20 | 崔敏娟 | Method for manufacturing inner shuttle of rotating shuttle |
-
2012
- 2012-11-27 CN CN201210491743.4A patent/CN102962457B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0456707A (en) * | 1990-06-26 | 1992-02-24 | Daido Steel Co Ltd | Continuous type vacuum furnace |
| JP2003328006A (en) * | 2002-05-13 | 2003-11-19 | Ishikawajima Harima Heavy Ind Co Ltd | Continuous baking unit for porous body sheet of heat- resistant alloy, and method for manufacturing the same |
| CN102011276A (en) * | 2010-10-28 | 2011-04-13 | 宁波市鄞州勇耀缝制机械有限公司 | Process for manufacturing rotating shuttle inner shuttle bottom supporting structure |
| CN102500757A (en) * | 2011-11-09 | 2012-06-20 | 崔敏娟 | Method for manufacturing inner shuttle of rotating shuttle |
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Address after: 321001 Zhejiang Province, Jinhua city Wucheng District Youth Industrial Zone Patentee after: ZHEJIANG YIHUO TECHNOLOGY CO.,LTD. Address before: 321001 Zhejiang Province, Jinhua city Wucheng District Youth Industrial Zone Patentee before: ZHEJIANG YIHUO TECH CO.,LTD. |
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Granted publication date: 20141008 Termination date: 20211127 |