CN101280422A - Device for lot manufactureof diamond coating drawing die - Google Patents
Device for lot manufactureof diamond coating drawing die Download PDFInfo
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- CN101280422A CN101280422A CNA2008100445230A CN200810044523A CN101280422A CN 101280422 A CN101280422 A CN 101280422A CN A2008100445230 A CNA2008100445230 A CN A2008100445230A CN 200810044523 A CN200810044523 A CN 200810044523A CN 101280422 A CN101280422 A CN 101280422A
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- drawing die
- multimode
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Abstract
The invention relates to a mass preparation device of a diamond-coated drawing die. The device comprises a single-wire multi-die and multi-wire multi-die assembly die, a die supporting jig, a multi-point distribution air inlet system and a low pressure vacuum cavity, wherein, during the hot wire arrangement, a hole punching and straight drawing hot wire is adopted in the vertical direction, the lower end of the hot wire is straightened with a cone-shaped weight, and the gravity is buffered with a high temperature spring. Diamond thin film is formed by in a way that the resolvent of the high temperature gas of the hot wire is deposited in the working area of the drawing die. By adopting the invention, the mass preparation of the diamond-coated drawing die with large size range can be realized. The prepared diamond-coated drawing die has the advantages that the service life is long, the surface quality of the processed wire rod is good, and the size control precision is high, etc.
Description
Technical field
The reaction product that the invention belongs to by gaseous compound decomposition and surfacing is the chemical plating technical field of feature with the inorganic materials beyond the deposit metallic material.Be specifically related to a kind of device for lot manufactureof diamond coating drawing die.
Background technology
CVD diamond coatings technology can be effectively carried out coating to the bore surface of wire-drawing die complexity, make high performance diamond coating drawing die, can overcome that wide aperture glomerocryst wire-drawing die costs an arm and a leg, easy crisp shortcoming, also can overcome the deficiency that the sintered carbide wire drawing die tool is easy to wear, working life is short, thereby improve the durability of mould, reduce use cost, its application prospect is very extensive.Yet diamond coating drawing die realizes that the industrialization difficulty is very big.Because the constructional feature of wire-drawing die is to become the bore surface of radius as working face, the requirement of use properties is that hardness height, wear-resistant, shock resistance, frictional coefficient are little.In objective terms, at the coating device of such constructional feature and service requirements and coating process etc. its singularity is arranged.
A kind of preparation method of diamond-coated wire-drawing die is disclosed in the Chinese patent literature database (CN1211635A), in this patented technology, adopt on the horizontal direction and pass the heated filament of nib as the gas driving source, can realize single wire-drawing die coating, but to a plurality of moulds coatings difficulty relatively just simultaneously, mould often produces thermal distortion, ablation phenomen occurs or the graphite composition is in the majority.Mainly be because the interior hole dimension of wire-drawing die is less, and heated filament is yielding when high temperature, be difficult to satisfy a plurality of moulds to neutral requirement.Wire-drawing die is fixed on the brace table in addition, and the distance of each region distance heated filament of its bore surface is inconsistent, and the type of cooling is again brace table one side's unidirectional cooling, and this two aspect has caused each wire-drawing die bore surface temperature distributing disproportionation even; Aspect the distribution of reactant gases, adopt parallel hot wire air flow method, since the thermal boundary effect, the skewness of reactant gases in the entire reaction chamber.Temperature and reactant gases distribute, and inhomogeneous wire-drawing die coating quality that finally causes the entire reaction chamber and thickness evenness etc. can't be guaranteed.In addition,, make a plurality of moulds of can't connecting on the individual thread, otherwise cause the sparking ablation phenomen in the edges and corners of mould easily, also limited its mass preparation if adopt the auxiliary forming core that strengthens of electronics, can't industrialized mass production, application value is not high.
Summary of the invention
The batch preparations device that the purpose of this invention is to provide a kind of diamond-coated wire-drawing die.Employing the present invention can guarantee quality, homogeneity, coating and the basal body binding force of each wortle bore surface diamond coatings in the reaction chamber, and the pass roundness after the coating.
A kind of device for lot manufactureof diamond coating drawing die of the present invention comprises:
A monofilament multimode-multifibres multimode line system;
One cover support fixture;
A multiple spot distribution inlet system;
A low-voltage vacuum chamber;
Its annexation is, is provided with monofilament multimode-multifibres multimode line system and support fixture in the low-voltage vacuum chamber, and wherein monofilament multimode-multifibres multimode line system is arranged on above the support fixture, and multiple spot distribution inlet system is arranged on the wall of low-voltage vacuum chamber.
Heated filament in described monofilament multimode-multifibres multimode adopts the vertical direction setting, and the heated filament that is provided with on the vertical direction adopts perforation vertical pulling tungsten filament or tantalum wire.
Described support fixture adopts uniform, the even cooling of hoop, self-centering mode fixed mould.
Mould in described monofilament multimode-multifibres multimode adopts the wire-drawing die of identical or different profile specification.
The endoporus size range of described wire-drawing die is Φ 1.5mm～Φ 50.0mm.
For realizing purpose of the present invention, gordian technique is how to keep heated filament preferably to neutrality in a plurality of wortle coating procedures, requires heated filament not broken simultaneously, and is more consistent with the gas resolvent with the heat that assurance mould bore surface obtains everywhere; Be to solve the distribution problem of reactant gases in reaction chamber in addition, be evenly distributed with the gas flowfield that keeps each mould place.Final quality and the homogeneity that keeps diamond coatings.
The vertical direction vertical pulling heated filament batch preparations diamond-coated wire-drawing die that the present invention adopts, because the at high temperature softening elongation of heated filament, and it is sagging naturally under action of gravity, adopt the taper weight that it is stretching, cushion gravity with high temperature spring again, thereby heated filament is remained in vertical direction in whole coating procedure.
The uniform anchor clamps of hoop that the present invention adopts are except fixed mould, interlock effect between anchor clamps makes the axis of clamping mould be positioned at all the time on the vertical pulling heated filament position, even the profile specification of same heated filament mold is variant, the axis that also can keep all moulds point-blank, hoop symmetry distribution anchor clamps make the outside uniformly transfer heat of mould in addition, the result is that mould bore surface temperature distribution is relatively consistent, so the quality of coating and homogeneity can be guaranteed aspect uniform distribution of temperature.
The present invention adopts multiple spot distribution inlet system batch preparations diamond-coated wire-drawing die.According to thermal conduction study, hydromeehanics scheduling theory and method for numerical simulation, and corresponding monitoring and the distribution of detection means optimization gas in reaction chamber, except that the top at reaction chamber is furnished with the gas inlet, also arranged corresponding gas inlet at the middle part of reaction chamber, and pneumatic outlet is positioned at the bottom, has formed more stable and uniform reactant gas flow field like this in the zone at mould place.Thereby the quality of coating and homogeneity can be guaranteed on the uniform distribution of reactant gases.
The vertical direction that the present invention adopts is bored a hole the vertical pulling heated filament as the gas driving source, even cooling, self-centering anchor clamps, and multiple spot distribution inlet system, can guarantee can 1～10 mould of serial arrangement, 1～10 heated filament arranged side by side in the reaction chamber simultaneously on the single heated filament.
Adopt the diamond-coated wire-drawing die of the present invention's preparation can completely be used for the drawing of wire rod such as welding wire, welding rod, stainless steel, cold heading steel, copper aluminium, steel alloy, tungsten, molybdenum and tubing, have advantages such as long service life, dimensional precision height, wire rod or tube surfaces quality are good.
Description of drawings:
Fig. 1 is a device for lot manufactureof diamond coating drawing die cross-sectional view of the present invention
Fig. 2 is a device for lot manufactureof diamond coating drawing die structure vertical view of the present invention
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Shown in Figure 1; the sintered carbide wire drawing die matrix 4 of some amount is fixed on that hoop is uniform, in the middle of the self-centering anchor clamps 3; anchor clamps 3 are fixed on the support 11, and vertical pulling heated filament 6 vertically arranges, and stretching with taper weight 7; high temperature spring 8 buffering gravity; the upper end connection electrode support 2 of vertical pulling heated filament 6, the lower end utilizes taper weight 7 as electrode, and is connected to power supply 1 by flexible copper cable 10; reactant gases enters from multiple spot distribution inlet system 5, discharges from venting port 9.
Embodiment 1
Matrix adopting YG6 sintered carbide wire drawing die, primary depositing is totally 14 two molds, wherein a cover profile specification is that the quantity of Φ 16mm * 14mm has 8, endoporus size range Φ 2.1～Φ 3.3mm, allowable tolerance is-0.02～0mm, the quantity that an other cover profile specification is Φ 20mm * 17mm has 6, endoporus size range Φ 5.0～Φ 3.4mm, allowable tolerance is-0.02mm～0.02mm, coat-thickness and tolerance are reserved by repairing a die in all nib surfaces, and mould places Murakami solution alligatoring etching after surface decontamination cleans, Murakami solution is the aqueous solution of the Tripotassium iron hexacyanide and potassium hydroxide, and its volume ratio is K
3[Fe (CN)]
6: KOH: H
2O=1: 1: 10, time 30min.Place 15% dilute nitric acid solution to remove the cobalt of matrix surface again, take out behind the 20min, acid with clear water flush away remained on surface, mould being put into granularity is the diadust suspension sonic oscillation processing 30min of 1 μ m again, take out the back and clean, place then on the uniform anchor clamps of hoop of chemical vapor deposition reaction chamber with deionized water and raw spirit.Heated filament adopts four Φ 0.4mm tantalum wires, respectively passes the mould of 4 physical dimension Φ 16mm * 14mm on two heated filaments, and two heated filaments respectively pass the wire-drawing die of 3 physical dimension Φ 20mm * 17mm in addition, and 4 heated filaments all use the taper weight stretching.Reaction chamber vacuumizes the back and feeds reactant gases (H
2, CH
4), begin chemical gas-phase deposition of diamond coating behind the adjustment chamber pressure.Forming core stage process parameter is: pressure 4kPa, reactant gases are CH
4And H
2Gas mixture, total flux 1000ml/min, CH
4Volume parts be 3%, about 2200 ℃ of hot-wire temperature, time 1h.The growth phase processing parameter is: pressure 2.5kPa, reactant gases are CH
4, N
2And H
2Gas mixture CH
4Volume parts is 3%, N
2Volume parts is 8%, total gas couette 1000ml/min, and time 7h obtains the fine-grain diamond coatings, and thickness is about 15 μ m.This coating is after polishing, and surface roughness Ra is less than 0.05 μ m.The complete wire drawing experiment that is used for the ER-50 gas protecting welding wire of this coating drawing die; in order to substitute original sintered-carbide die; wire drawing output is increased to 2000 tons from original 30 tons, and the wire surface quality also is improved, and whole process is saved 50% above powdered lubricant consumption.
Claims (7)
1. device for lot manufactureof diamond coating drawing die, this device comprises:
A monofilament multimode-multifibres multimode line system;
One cover support fixture;
A multiple spot distribution inlet system;
A low-voltage vacuum chamber;
Its annexation is, is provided with monofilament multimode-multifibres multimode line system and support fixture in the low-voltage vacuum chamber, and wherein monofilament multimode-multifibres multimode line system is arranged on above the support fixture, and multiple spot distribution inlet system is arranged on the wall of low-voltage vacuum chamber.
2. device for lot manufactureof diamond coating drawing die according to claim 1, it is characterized in that: the heated filament in described monofilament multimode-multifibres multimode assembling adopts the vertical direction setting, the heated filament lower end is provided with and is used for stretching taper weight, high temperature spring buffering gravity.
3. device for lot manufactureof diamond coating drawing die according to claim 2 is characterized in that: the heated filament that is provided with on the described vertical direction adopts perforation vertical pulling tungsten filament or tantalum wire.
4. device for lot manufactureof diamond coating drawing die according to claim 2 is characterized in that: described taper weight adopts the electrode of metallic substance as heated filament vertical direction lower end.
5. device for lot manufactureof diamond coating drawing die according to claim 1 is characterized in that: described support fixture adopts uniform, the even cooling of hoop, self-centering mode fixed mould.
6. a kind of device for lot manufactureof diamond coating drawing die according to claim 1 is characterized in that: the mould in described monofilament multimode-multifibres multimode adopts the wire-drawing die of identical or different profile specification.
7. a kind of device for lot manufactureof diamond coating drawing die according to claim 5 is characterized in that: the endoporus size range of described wire-drawing die is Φ 1.5mm～Φ 50.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810044523 CN101280422B (en) | 2008-04-02 | 2008-04-02 | Device for lot manufactureof diamond coating drawing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810044523 CN101280422B (en) | 2008-04-02 | 2008-04-02 | Device for lot manufactureof diamond coating drawing die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101280422A true CN101280422A (en) | 2008-10-08 |
| CN101280422B CN101280422B (en) | 2010-12-15 |
Family
ID=40013092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810044523 Expired - Fee Related CN101280422B (en) | 2008-04-02 | 2008-04-02 | Device for lot manufactureof diamond coating drawing die |
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| Country | Link |
|---|---|
| CN (1) | CN101280422B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240685A (en) * | 2010-05-13 | 2011-11-16 | 湖北省麻城市镡鑫科技有限公司 | Stretcher |
| CN102383113A (en) * | 2011-10-25 | 2012-03-21 | 武汉工程大学 | Method and device for improving efficiency of preparing diamond coating on tool surface and coating evenness |
| CN102586756A (en) * | 2012-03-05 | 2012-07-18 | 宜兴市景程模具有限公司 | Microporous diamond coating preparation device for drawing dies and coating preparation method |
| CN103834930A (en) * | 2013-12-29 | 2014-06-04 | 湖南中航超强金刚石膜高科技有限公司 | Clamp and process used for coating inner bore with diamond film |
| CN103981509A (en) * | 2014-05-30 | 2014-08-13 | 大连理工常州研究院有限公司 | Vertical-layout single-array hot wire device for preparing diamond film |
| CN106799403A (en) * | 2016-12-30 | 2017-06-06 | 安徽海天电器有限公司 | A kind of high accuracy B alloy wire wire-drawing equipment |
| CN113549894A (en) * | 2021-07-29 | 2021-10-26 | 久钻科技(成都)有限公司 | Diamond coating wire drawing mould processingequipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825084A (en) * | 2016-12-30 | 2017-06-13 | 安徽海天电器有限公司 | A kind of adjustable B alloy wire wire-drawing frame |
-
2008
- 2008-04-02 CN CN 200810044523 patent/CN101280422B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240685A (en) * | 2010-05-13 | 2011-11-16 | 湖北省麻城市镡鑫科技有限公司 | Stretcher |
| CN102383113A (en) * | 2011-10-25 | 2012-03-21 | 武汉工程大学 | Method and device for improving efficiency of preparing diamond coating on tool surface and coating evenness |
| CN102383113B (en) * | 2011-10-25 | 2013-08-21 | 武汉工程大学 | Method and device for improving efficiency of preparing diamond coating on tool surface and coating evenness |
| CN102586756A (en) * | 2012-03-05 | 2012-07-18 | 宜兴市景程模具有限公司 | Microporous diamond coating preparation device for drawing dies and coating preparation method |
| CN103834930A (en) * | 2013-12-29 | 2014-06-04 | 湖南中航超强金刚石膜高科技有限公司 | Clamp and process used for coating inner bore with diamond film |
| CN103981509A (en) * | 2014-05-30 | 2014-08-13 | 大连理工常州研究院有限公司 | Vertical-layout single-array hot wire device for preparing diamond film |
| CN106799403A (en) * | 2016-12-30 | 2017-06-06 | 安徽海天电器有限公司 | A kind of high accuracy B alloy wire wire-drawing equipment |
| CN113549894A (en) * | 2021-07-29 | 2021-10-26 | 久钻科技(成都)有限公司 | Diamond coating wire drawing mould processingequipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101280422B (en) | 2010-12-15 |
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Granted publication date: 20101215 Termination date: 20140402 |