CN105414547B - Ultra-fine grain list double straight-hole hard alloy pole manufacture method - Google Patents

Ultra-fine grain list double straight-hole hard alloy pole manufacture method Download PDF

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CN105414547B
CN105414547B CN201510948865.5A CN201510948865A CN105414547B CN 105414547 B CN105414547 B CN 105414547B CN 201510948865 A CN201510948865 A CN 201510948865A CN 105414547 B CN105414547 B CN 105414547B
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hard alloy
alloy pole
double straight
hole hard
single double
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CN105414547A (en
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杨康宁
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ZHUZHOU MEETYOU CEMENTED CARBIDE CO Ltd
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Zhuzhou Meet-You Carbide Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12Both compacting and sintering
    • B22F3/1208Containers or coating used therefor
    • B22F3/1216Container composition
    • B22F3/1233Organic material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12Both compacting and sintering
    • B22F3/1208Containers or coating used therefor
    • B22F3/1258Container manufacturing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12Both compacting and sintering
    • B22F3/14Both compacting and sintering simultaneously
    • B22F3/15Hot isostatic pressing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02Organic and inorganic ingredients
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/08Metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/09Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/08Metals
    • C08K2003/0881Titanium
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/08Metals
    • C08K2003/0887Tungsten
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2296Oxides; Hydroxides of metals of zinc
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/003Additives being defined by their diameter
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
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Abstract

A kind of single double straight-hole hard alloy pole preparation method, uses the dry bag formula isostatic pressed rubber soft mode sizing material based on natural rubber to make single double straight-hole hard alloy pole micro molding mould;Natural or synthetic rubber, zinc oxide, stearic acid and auxiliary addition agent are uniformly kneaded, and single double straight-hole hard alloy pole micropore blank molded rubber soft mode is made in the addition heat conduction hardening agent in mixing, then overall vulcanization;In the single double straight-hole hard alloy pole blank of compacting, pass through the forming temperature of the single double straight-hole hard alloy pole micropore of heat conduction hardening agent increase in molded rubber soft mode, and the hardening infiltration in heat conduction hardening agent is arrived in single double straight-hole hard alloy pole micropore interior surface layers, improve list double straight-hole hard alloy pole micropore inner surface hardness.

Description

Ultra-fine grain list double straight-hole hard alloy pole manufacture method
Technical field
The present invention relates to a kind of method for preparing powder metallurgy, particularly single double straight-hole hard alloy pole manufacture method.Extensively It is general to be used to make various production and processing fields:Such as:Make the micro- brills of various whole hard alloy PCB, drill bit, slotting cutter, reamer etc. Instrument, for processing the products such as aluminium alloy, stainless steel, heat-resisting alloy steel, spheroidal graphite cast-iron, Ni-based and titanium alloy, non-ferrous metal;With And make variously-shaped plug-in unit, silicon steel sheet and cold-reduced sheet, stainless steel drift, thimble, red needle etc..Belong to powder metallurgically manufacturing technology Field.
Background technology:
In modern industry and the high speed development of technology, the application of hard alloy is more and more wider, but is closed using hard Golden department is such as machined, performance of the electronics and information industry also to hard alloy proposes newest high request.Such as electricity Sub-information industry it is highly integrated, electronic component miniaturization , Chu Now need the hard high-strength of processing PCB plate, and diameter is small to be reached 0.2mm micro- brill;And the novel aluminum alloy and composite of aerospace industry, it is desirable to high rigidity Precision hole dill has, and is permitted Many special materials require high abrasion cutting tip, with up to its machining accuracy.Exactly under these new situations, soap-free emulsion polymeization has been promoted The development of phase, low Binder Phase nano hard alloy.Especially, in terms of machining Xin Jin Chu Now single double straight-hole pole hard Alloy makes various sintered-carbide tools, using single double straight-hole hard alloy pole tools there is center to carry micropore, just Cooling or lubrication in being processed, can so greatly improve the service life of instrument, improve operating efficiency.But will be It is very very difficult that micropore, especially diplopore are processed in hard alloy, and existing single double straight-hole pole hard alloy pole is general Store-through is inconsistent in inside and outside quality, the deficiency of consistent influence overall performance.Such as add the sandpipe of sand water knife, to hard alloy Propose rigors, plus sand water knife is to add tiny seed of pomegranate sand grains in water(Microhardness 1438HV.Proportion 3.98.Grain Spend 60,80,100,120 mesh), water under high pressure and sand are made the sand grains of high-speed jet by sandpipe, machined material carried out powerful Abrasion.When sand water thread diameter is from 0.5 to 1.27mm, water pressure is about 300MPa~500MPa, and water sand mixed flow speed about 800~ 1000 meter per seconds.Plus sand water knife is unique a kind of cold conditions high energy beam machining technology on our times.Stone material can be cut Material, in the case where region heating need not be carried out to the thick metal for reaching 200mm(Such as inconel, titanium, tool steel), Hua Gang The various building stones such as rock, monocrystalline silicon, modern age height hard and tough composite, glass, ceramics or elastic caoutchouc etc. carry out cutting and added Work.Such as auto industry, aircraft industry, building stones and tile industry, instrument and Making mold industry are all applied.But it is existing Generally existing sandpipe inner surface hardness does not reach preferable state when some sandpipes are made using single double straight-hole hard alloy pole, Under the impact of tiny seed of pomegranate sand grains, it is easy to wear and tear, so that the performance of influence sandpipe, necessary to this Improved.
Do not have discovery to have the patent literature constructed with the present invention by patent retrieval, related to the present invention is main Have following:
1st, Patent No. CN201410600566.8, entitled " a kind of hard alloy circular bar vacuum-sintering is anti-bending Method " patent of invention, which disclose a kind of anti-bending method of hard alloy circular bar vacuum-sintering, its technique Step includes:A, extruder are compressing;B, karbate impervious graphite boat load blank are to be spontaneously dried;C, blank are cut;d、 Blank is put into progress degumming pre-burning in degumming stove with degumming pre-burning graphite boat;E, blank machining;F, in graphite cover plate Cover plate V-shaped groove surface, graphite bottom plate bottom plate V-shaped groove surface coating release coating;G, release coating are spontaneously dried;H, sintering Graphite boat load blank is loaded, blank is fastened between bottom plate V-shaped groove and cover plate V-shaped groove;I, by blank with sintering load stone Black boat is put into vacuum sintering furnace, is vacuumized after closing fire door;J, blank vacuum-sintering;K, cool to room temperature with the furnace, circle Prepared by shape bar completes.
2nd, Patent No. CN201520357841, the hair of entitled " a kind of optimization mould for making hard alloy pole " Bright patent, which disclose a kind of optimization mould for making hard alloy pole, it includes:Left mould tool, intermediate mold, right mould Tool;The arc groove that described left mould tool, intermediate mold, right mould tool are provided with arc groove, three pieces of moulds constitute one it is complete Circular hole, the pole circularity produced by the mould is high, than original pole made, and reduces by one of polishing operation, Open reduction processing cost, improve the effect for the rate that comes into force.
3rd, Patent No. CN200410045029, the patent of invention of entitled " ultrafine crystal grain hard alloy material ", this is special Profit discloses a kind of Hardmetal materials, particularly a kind of ultrafine crystal grain hard alloy material.Ultrafine crystal grain hard alloy material It is made up of WC, metallic cobalt Co, carbide vanadium vc and chromium carbide Cr3C2 that ultra-fine grain tungsten carbide is 0.5 μm, between its each component Percentage by weight is:WC: Co: VC: Cr3C2 is equal to 90~92.5: 7~9: 0.1~0.5: 0.3~0.7.The material had both had very High hardness and anti-wear performance, while having very high intensity and toughness again.
Though these above-mentioned patents have been directed to hard alloy pole, single double straight-hole hard alloy circle is all not directed to Rod, though Patent No. CN200410045029, the patent of invention of entitled " ultrafine crystal grain hard alloy material " is related to one Kind of ultrafine crystal grain hard alloy material, but it is consistent to solve single double straight-hole hard alloy pole micropore surfaces externally and internally hardness Problem, therefore it is still necessary to improved.
The content of the invention
The purpose of the present invention is exactly, according to the problems of single double straight-hole hard alloy pole at present, to propose that one kind can change Kind list double straight-hole hard alloy pole bore area quality so that outside single double straight-hole hard alloy pole micropore inner surface and pole The consistent single double straight-hole hard alloy pole preparation method of surface property and product.
According to foregoing invention purpose, technical scheme proposed by the invention is:A kind of single double straight-hole hard alloy pole system Make method, use the dry bag formula isostatic pressed rubber soft mode sizing material based on natural rubber to make single double straight-hole hard alloy pole Micro molding mould;Natural or synthetic rubber, zinc oxide, stearic acid and auxiliary addition agent are uniformly kneaded, and added in mixing Single double straight-hole hard alloy pole micropore blank molded rubber soft mode is made in heat conduction hardening agent, then overall vulcanization;In compacting Dan Shuan During straight hole hard alloy pole blank, single double straight-hole hard alloy pole is increased by the heat conduction hardening agent in molded rubber soft mode The forming temperature of micropore, and cause hardening infiltration in heat conduction hardening agent to table in list double straight-hole hard alloy pole micropore In surface layer, single double straight-hole hard alloy pole micropore inner surface hardness is improved.
Further, described heat conduction hardening agent be the metal fine powder with heat conduction hardening performance, including tungsten micro mist, Metal zirconium micro mist or Titanium micro mist.
Further, described metal fine powder is micro mist of the granularity at 0.2-0.4 μm, and micro mist purity is in 97-99%.
Further, described metal fine powder is in the 2- that percentage by weight shared by molded rubber soft mode is overall material weight 5%, metal fine powder is added when material is mixed, and is stirred.
Further, the weight deal proportioning of described molded rubber soft mode each component is as follows:
Natural or synthetic rubber 45-80 parts
4-5 parts of zinc oxide
1-3 parts of stearic acid
23-35 parts of auxiliary addition agent
2-5 parts of heat conduction hardening agent;
Further, described auxiliary addition agent includes age resistor, reinforcing agent, plasticizer, vulcanizing agent and accelerator, according to property It can need freely to assemble.
Further, described hard alloy pole blank technology flow is:
By purposes requirement formula → powder processed → making molded rubber soft mode → compacting → shaping → low pressure sintering → shaping hair Product is made in base → peripheral milling is refined →.
The advantage of the invention is that:The present invention uses molded rubber soft mode when making single double straight-hole hard alloy pole, And heat conduction hardening agent is with the addition of in dispensing, the increased single double straight-hole hard of heat conduction hardening agent can be passed through when compressing The forming temperature of alloy pole micropore inner surface, and in forming process, superhard material is attached to list by way of infiltration Double straight-hole hard alloy pole micropore inner surface, further enhances the hardness of bore area, can be improved after forming by a firing makes 3-4 times, remote ultra-traditional list double straight-hole hard alloy pole service life are may be up to the life-span.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
Embodiment one
A kind of single double straight-hole hard alloy pole preparation method, described hard alloy pole blank technology flow is:
By purposes requirement formula → powder processed → making molded rubber soft mode → compacting → shaping → low pressure sintering → shaping hair Product is made in base → peripheral milling is refined →.Wherein, make molded rubber soft mode when based on natural rubber, add oxidation Rubber soft mode is made by mixing in zinc, stearic acid, auxiliary addition agent, and adds heat conduction hardening agent in mixing;The weight of its formula material Part includes:
Natural rubber 45 parts
Zinc oxide 4 parts
Stearic acid 1 part
Auxiliary addition agent 23 parts
Heat conduction hardening agent 2 parts
Described auxiliary addition agent includes age resistor, reinforcing agent, plasticizer, vulcanizing agent and accelerator, according to conventional any group Match somebody with somebody.Described heat conduction hardening agent is tungsten micro mist.Micro mist of the tungsten micro powder granule degree at 0.2-0.4 μm, micro mist purity exists 97-99%。
Embodiment two
A kind of single double straight-hole hard alloy pole preparation method, described hard alloy pole blank technology flow is:
By purposes requirement formula → powder processed → making molded rubber soft mode → compacting → shaping → low pressure sintering → shaping hair Product is made in base → peripheral milling is refined →.Wherein, make molded rubber soft mode when based on butadiene-styrene rubber, add oxidation Rubber soft mode is made by mixing in zinc, stearic acid, auxiliary addition agent, and adds heat conduction hardening agent in mixing;The weight of its formula material Part includes:
Butadiene-styrene rubber 80 parts
Zinc oxide 5 parts
Stearic acid 3 parts
Auxiliary addition agent 35 parts
Heat conduction hardening agent 5 parts
Described auxiliary addition agent includes age resistor, reinforcing agent, plasticizer, vulcanizing agent and accelerator, according to conventional any group Match somebody with somebody.Described heat conduction hardening agent is metal zirconium micro mist.Micro mist of the metal zirconium micro powder granule degree at 0.2-0.4 μm, micro mist purity exists 97-99%。
Embodiment three
A kind of single double straight-hole hard alloy pole preparation method, described hard alloy pole blank technology flow is:
By purposes requirement formula → powder processed → making molded rubber soft mode → compacting → shaping → low pressure sintering → shaping hair Product is made in base → peripheral milling is refined →.Wherein, make molded rubber soft mode when based on butadiene rubber, add oxidation Rubber soft mode is made by mixing in zinc, stearic acid, auxiliary addition agent, and adds heat conduction hardening agent in mixing;The weight of its formula material Part includes:
Butadiene rubber 65 parts
Zinc oxide 4 parts
Stearic acid 2 parts
Auxiliary addition agent 33 parts
Heat conduction hardening agent 3 parts
Described auxiliary addition agent includes age resistor, reinforcing agent, plasticizer, vulcanizing agent and accelerator, according to conventional any group Match somebody with somebody.Described heat conduction hardening agent is Titanium micro mist, and micro mist of the Titanium micro powder granule degree at 0.2-0.4 μm, micro mist purity exists 97-99%。。
It is as follows by the rubber soft mode physical property obtained by sulfidization molding according to above-mentioned formula:
Project Test recipe 1 Test recipe 2 Test recipe 3
Hardness, shore A 79 78 78
100% stretches surely, MPa 6 6 6
200% stretches surely, MPa 12 12 13
300% stretches surely, MPa 14 14 14
Elongation, % 318 322 292
Tensile strength, MPa 19 18 17
Tearing strength, KN/m 55 45 45
Have no progeny deformation, % 13 12 12
Compression set, % 22 23 21
It can be seen from above-described embodiment that the present invention relates to a kind of preparation method of single double straight-hole hard alloy pole, Described hard alloy pole blank technology flow is:By purposes requirement formula → powder processed → making molded rubber soft mode → pressure Product is made in system → shaping → low pressure sintering → molded blank → peripheral milling is refined →.Wherein, make molded rubber soft mode when with Butadiene rubber for main body, add zinc oxide, stearic acid, auxiliary addition agent rubber soft mode be made by mixing, and add and lead in mixing Hot hardening agent;The surface quality of single double straight-hole hard alloy pole endoporus can so be greatly improved.
Above example is simply to illustrate that the present invention, some cited more preferably embodiments, this area skill The usual variations and alternatives that art personnel are carried out in the range of the technical program should be comprising within the scope of the present invention.
The advantage of the invention is that:The present invention uses molded rubber soft mode when making single double straight-hole hard alloy pole, And heat conduction hardening agent is with the addition of in dispensing, the increased single double straight-hole hard of heat conduction hardening agent can be passed through when compressing The forming temperature of alloy pole micropore inner surface, and in forming process, superhard material is attached to list by way of infiltration Double straight-hole hard alloy pole micropore inner surface, further enhances the hardness of bore area, can be improved after forming by a firing makes 3-4 times, remote ultra-traditional list double straight-hole hard alloy pole service life are may be up to the life-span.

Claims (6)

1. a kind of single double straight-hole hard alloy pole preparation method, uses the dry bag formula isostatic pressed rubber based on natural rubber Soft mode sizing material makes single double straight-hole hard alloy pole micro molding mould;By natural or synthetic rubber, zinc oxide, stearic acid and Auxiliary addition agent is uniformly kneaded, and single double straight-hole hard alloy pole is made in the addition heat conduction hardening agent in mixing, then overall vulcanization Micropore blank molded rubber soft mode;In the single double straight-hole hard alloy pole blank of compacting, pass through leading in molded rubber soft mode The forming temperature of the hot single double straight-hole hard alloy pole micropore of hardening agent increase, and the hardening material in heat conduction hardening agent is oozed Arrive thoroughly in single double straight-hole hard alloy pole micropore interior surface layers, improve single double straight-hole hard alloy pole micropore inner surface hard Degree;Described heat conduction hardening agent is the metal fine powder with heat conduction hardening performance, including tungsten micro mist, metal zirconium micro mist or gold Belong to titanium micro mist.
2. list double straight-hole hard alloy pole preparation method as claimed in claim 1, it is characterised in that:Described metal fine powder Micro mist for granularity at 0.2-0.4 μm, micro mist purity is in 97-99%.
3. list double straight-hole hard alloy pole preparation method as claimed in claim 2, it is characterised in that:Described metal fine powder In the 2-5% that percentage by weight shared by molded rubber soft mode is overall material weight, metal fine powder is added when material is mixed, stirred Mix uniform.
4. list double straight-hole hard alloy pole preparation method as claimed in claim 3, it is characterised in that:Described molded rubber The weight deal proportioning of soft mode each component is as follows:
Natural or synthetic rubber 45-80 parts
4-5 parts of zinc oxide
1-3 parts of stearic acid
23-35 parts of auxiliary addition agent
2-5 parts of heat conduction hardening agent.
5. list double straight-hole hard alloy pole preparation method as claimed in claim 4, it is characterised in that:Described auxiliary addition agent Including age resistor, reinforcing agent, plasticizer, vulcanizing agent and accelerator, need freely to assemble according to performance.
6. list double straight-hole hard alloy pole preparation method as claimed in claim 5, it is characterised in that:Described hard alloy Pole blank technology flow is:
By purposes requirement formula → powder processed → making molded rubber soft mode → compacting → shaping → low pressure sintering → molded blank → peripheral milling refines → product is made.
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