CN103949641B - A kind of manufacturing process of micropore wire drawing die carbide alloy core rod - Google Patents

A kind of manufacturing process of micropore wire drawing die carbide alloy core rod Download PDF

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Publication number
CN103949641B
CN103949641B CN201410176431.3A CN201410176431A CN103949641B CN 103949641 B CN103949641 B CN 103949641B CN 201410176431 A CN201410176431 A CN 201410176431A CN 103949641 B CN103949641 B CN 103949641B
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China
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wire drawing
drawing die
core rod
carbide alloy
alloy core
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CN103949641A (en
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黄家明
孙东平
常秋梅
陈世培
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JIUJIANG GOLDEN EGRET CEMENTED CARBIDE Co Ltd
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JIUJIANG GOLDEN EGRET CEMENTED CARBIDE Co Ltd
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Abstract

The present invention discloses a kind of manufacturing process of micropore wire drawing die carbide alloy core rod, its technique is as follows: adopt 0.3um Ultra-fine Grained WC powder to be major ingredient, the Co powder content added controls at 5-8%, generate compound, compound is again through the compression molding of mechanical powder moulding press, then use special tool to obtain core rod blank through Manufacture Technology of Semi-finished Products, obtain micropore wire drawing die carbide alloy core rod through pressure sintering and centreless grinding grinding.Effect of the present invention is: (1) compound changes lot number and produces, when contraction change is larger, mould need not be remodified, as long as adjustment half machined parameters, (2) special half process equipment, can efficiently, in batches, micropore wire drawing die carbide alloy core rod product that stably production dimensional accuracy is high.

Description

A kind of manufacturing process of micropore wire drawing die carbide alloy core rod
Technical field
The present invention relates to a kind of micropore die core of wire-drawing die production and manufacture field, be specifically related to a kind of manufacturing process of micropore wire drawing die carbide alloy core rod.
Background technology
The wire drawing die of drawing metal mainly contains three kinds of materials at present: diamond core rod, glomerocryst wire drawing die, sintered carbide wire drawing die.Diamond core rod wearability is fine but expensive; Glomerocryst wire drawing die, material hardness is high, anti-wear performance good, to be applicable in the higher environment of temperature the wires such as drawing tungsten, molybdenum, but drawing steel metalloid silk, then easily cause steel wire brittle, produce necking down and fracture of wire phenomenon, reduce the quality of steel wire.
Sintered-carbide die has higher hardness and toughness, is applicable to the drawing of steel wire, especially high strength answer steel wire in advance.With sintered carbide wire drawing die, its intensity, toughness and surface smoothness can reach well-content result of use.But current aperture is less than the wire drawing die alloy core rod product of 0.20mm, substantially development & production is not had at home, to material, carbide alloy micropore die core of wire-drawing die product requires that high, shaping difficulty is large, and aperture is less than the formed product difficulty of 0.20mm, and the blank of domestic technique is successfully filled up by my department.
Summary of the invention
The object of the present invention is to provide a kind of manufacturing process of micropore wire drawing die carbide alloy core rod, in order to ensure product quality, enhance productivity, our scheme that adopts semi-finished product to process of product for difficult forming solves problem, namely reequiped by the design of double process equipment, the design of half process tool and improvement, the innovation of processing technology and production process quality control, sintered carbide wire drawing die finished product is accomplished minimum-value aperture 0.10mm, and can produce in batches and steady quality.
The present invention is achieved like this, the process route that micropore wire drawing die alloy core rod blank adopts, and it is characterized in that method step is as follows:
One, batching, adopts 0.3um Ultra-fine Grained WC powder to be major ingredient, add Co powder content control at 5-8%, thus make raw material through add alcohol grinding and spraying dry after, compound hardness and the HRA value of generation are 90 ~ 95, make the wearability of wire drawing die material meet the demand of production;
Two, mold pressing, product center hole site, again through the compression molding of mechanical powder moulding press, for ensureing product quality and production efficiency, in this pressing process, being left a segment length and not being pressed logical by compound;
Three, false add, by semi-finished product process equipment, uses half process tool, above-mentioned length is got through rear acquisition core rod blank;
Four, sintering and finishing, obtain micropore wire drawing die carbide alloy core rod finally by pressure sintering and centreless grinding grinding.
Further, during described batching, use PEG as the forming agent of compound, improve compact strength, directly can process without pre-burning; Prior powder metallurgy is produced, and pressed compact needs through pre-burning, reaches certain intensity and just can carry out semi-finished product processing.
Further, during described mold pressing, in core rod product compacting production process, very fast to die wear.When die hardness is too high, mold and punching head easily collapses again.The compound production mould drift that use is particle WC in 15-30% for Co content, thus meet the double requirements of wearability and toughness.
Further, described half adding system is made up of loading and unloading and processing two big units.Operating personnel are only needed in automatic loading/unloading unit, to change special charging tray and carry out process quality control in operating process.Special charging tray has four alignment pins of dual vertical direction, can ensure the repetitive positioning accuracy of charging tray, thus protection product appearance.
Further, loading and unloading unit by special-purpose machinery hand operated, and adopts crawl product diagonal angle, saves charging tray space, improves sintering efficiency, reduces costs.
Further, the workbench of half adding system is that double rotational automaticization is run, when namely processing first blank, manipulator press from both sides again simultaneously one for subsequent use.After process finishing, worktable rotary completes material loading operation, then repeats material folding.
Further, in automatic process, procedure is composed of defencive function, and when machining center Z axis height exceeds setting stroke, system can be reported to the police, and stops processing, avoids main shaft and fixture bump against and affect processing precision of products.
Further, the described half processing shape of tool adopts 80-100 ° of chamfer drill and material to adopt PCD, ensures the quality stability of product batch production.
Further, described half process equipment double automatic operating, enhances productivity, and reduces Human Error Rate.
Further, semi-finished product add man-hour, and machining area whole process is in closed guard shield, and install high negative pressure dust collecting system in guard shield additional, and working environment air quality is good, change the idea of tradition half processing bad environments, make dust-free workshop.Whole process is safe, convenient, stable, thus ensures product quality.
Effect of the present invention is: (1) compound changes lot number and produces, when contraction change is larger, mould need not be remodified, as long as adjustment half machined parameters, (2) special half process equipment, can efficiently, in batches, micropore wire drawing die carbide alloy core rod product that stably production dimensional accuracy is high, (3) product aperture is flexible, in 0.10mm ~ 1.00mm pore diameter range, any hole size core rod product can be produced according to different customer requirement design, and not need again to make mould.
Accompanying drawing explanation
Fig. 1 is the structural representation of semi-finished product of the present invention processing.
Fig. 2 is contrast effect figure before and after semi-finished product of the present invention processing.
In the drawings, 1, special charging tray, 2, wire drawing die blank, 3, manipulator, 4, closed guard shield, 5, process tool, 6, high negative pressure dust collection pipe, 7, double rotary table.
Detailed description of the invention
Illustrate below in conjunction with accompanying drawing and be described in further detail embodiments of the invention, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar change thereof, all should list protection scope of the present invention in.
As shown in Figure 1, the present invention comes work and enforcement like this, it is characterized in that method step is as follows:
One, batching, adopts 0.3um Ultra-fine Grained WC powder to be major ingredient, add Co powder content control at 5-8%, thus make raw material through add alcohol grinding and spraying dry after, compound hardness and the HRA value of generation are 90 ~ 95, make the wearability of wire drawing die material meet the demand of production;
Two, mold pressing, product center hole site, again through the compression molding of mechanical powder moulding press, for ensureing product quality and production efficiency, in this pressing process, being left a segment length and not being pressed logical by compound;
Three, false add, by the semi-finished product process equipment developed specially, uses the dedicated tool of special material, this segment length is got through rear acquisition core rod blank;
Four, sintering and finishing, obtain micropore wire drawing die carbide alloy core rod product finally by pressure sintering and centreless grinding grinding.
As shown in Figure 1, semi-finished product process equipment comprises charging tray 1, wire drawing die blank 2, manipulator 3, closed guard shield 4, process tool 5, high negative pressure dust collection pipe 6 and double rotary table 7; On double rotary table 7, left end is provided with special charging tray, upper end is provided with two wire drawing die blanks 2, one of them wire drawing die blank 2 described is provided with manipulator, another wire drawing die blank 2 described is provided with process tool 5, the described wire drawing die blank 2 being provided with process tool 5 is covered with closed guard shield 4, side is provided with a high negative pressure dust collection pipe 6, described charging tray 1 places wire drawing die blank 2, manipulator 3 is loading and unloading gripping, during processing first blank, manipulator press from both sides again simultaneously one for subsequent use, after terminating, worktable rotary completes material loading operation.
As shown in Figure 2, through using half oil (gas) filling device of the present invention's repacking and exclusive cutter, adopt semi-finished product processing scheme, within making that core rod finished product aperture is minimum and can accomplishing 0.1mm, allowance control 0 ~ 0.01mm, and product aperture is flexible, in 0.10mm ~ 1.00mm pore diameter range, any hole size core rod product can be produced according to different Demand Design, and not need again to make mould.

Claims (7)

1. a manufacturing process for micropore wire drawing die carbide alloy core rod, is characterized in that method step is as follows:
One, batching, adopt 0.3um Ultra-fine Grained WC powder to be major ingredient, the Co powder content of interpolation controls at 5-8%, and raw material is through adding alcohol grinding and generating compound after spraying dry, and its HRA value is 90 ~ 95;
Two, mold pressing, product center hole site, again through the compression molding of mechanical powder moulding press, in this pressing process, is left a segment length and is not pressed logical by compound;
Three, false add, by semi-finished product process equipment and half process tool, gets through rear acquisition core rod blank by above-mentioned length;
Four, sintering and finishing, obtain micropore wire drawing die carbide alloy core rod finally by pressure sintering and centreless grinding grinding.
2. the manufacturing process of a kind of micropore wire drawing die carbide alloy core rod according to claim 1, is characterized in that: during described batching, adds PEG as the forming agent of compound, directly can carry out semi-finished product processing without pre-burning.
3. the manufacturing process of a kind of micropore wire drawing die carbide alloy core rod according to claim 1, is characterized in that: during described mold pressing, uses as the Co content compound production mould drift that is particle WC in 15-30%.
4. the manufacturing process of a kind of micropore wire drawing die carbide alloy core rod according to claim 1, is characterized in that: described semi-finished product process equipment comprises charging tray, wire drawing die blank, manipulator, closed guard shield, process tool, high negative pressure dust collection pipe and double rotary table; On double rotary table, left end is provided with charging tray, upper end is provided with two wire drawing die blanks, one of them wire drawing die blank is provided with manipulator, another wire drawing die blank is provided with process tool, the described wire drawing die blank being provided with process tool is covered with closed guard shield, and closed guard shield side is provided with a high negative pressure dust collection pipe.
5. the manufacturing process of a kind of micropore wire drawing die carbide alloy core rod according to claim 1, is characterized in that: described half process tool is 80-100 ° of chamfer drill, and cutter material adopts PCD.
6. the manufacturing process of a kind of micropore wire drawing die carbide alloy core rod according to claim 4, is characterized in that: described manipulator adopts and captures product diagonal angle.
7. the manufacturing process of a kind of micropore wire drawing die carbide alloy core rod according to claim 4, is characterized in that: described double rotary table automatic operating.
CN201410176431.3A 2014-04-29 2014-04-29 A kind of manufacturing process of micropore wire drawing die carbide alloy core rod Active CN103949641B (en)

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Publication number Priority date Publication date Assignee Title
CN104607490A (en) * 2015-03-03 2015-05-13 株洲力洲硬质合金有限公司 Processing process of micropore hard alloy wire-drawing mould
CN109576548A (en) * 2018-12-21 2019-04-05 成都美奢锐新材料有限公司 A kind of technique of cermet mold core material and its formation die core

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201823772U (en) * 2010-09-19 2011-05-11 赣县世瑞新材料有限公司 Straight line type wire-drawing die adopting hard alloy die core
CN202045173U (en) * 2011-01-26 2011-11-23 株洲力洲硬质合金有限公司 Direct-cooling hard alloy drawing mould
CN103480848A (en) * 2013-09-30 2014-01-01 苏州益群模具有限公司 Manufacturing method of high-performance wire-drawing die core

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11114964A (en) * 1997-10-20 1999-04-27 Hashiba Tekko Kk Vent plug of tire vulcanizing mold and its production

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201823772U (en) * 2010-09-19 2011-05-11 赣县世瑞新材料有限公司 Straight line type wire-drawing die adopting hard alloy die core
CN202045173U (en) * 2011-01-26 2011-11-23 株洲力洲硬质合金有限公司 Direct-cooling hard alloy drawing mould
CN103480848A (en) * 2013-09-30 2014-01-01 苏州益群模具有限公司 Manufacturing method of high-performance wire-drawing die core

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