CN109306423A - A kind of screw conveyor the accessory development of WC base cemented carbide and its manufacturing method - Google Patents

A kind of screw conveyor the accessory development of WC base cemented carbide and its manufacturing method Download PDF

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Publication number
CN109306423A
CN109306423A CN201811233378.0A CN201811233378A CN109306423A CN 109306423 A CN109306423 A CN 109306423A CN 201811233378 A CN201811233378 A CN 201811233378A CN 109306423 A CN109306423 A CN 109306423A
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China
Prior art keywords
cemented carbide
screw conveyor
carbide
base cemented
moc
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CN201811233378.0A
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Chinese (zh)
Inventor
张勇
王立新
曾强明
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ZHUZHOU CHAOYU INDUSTRIAL Co Ltd
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ZHUZHOU CHAOYU INDUSTRIAL Co Ltd
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Priority to CN201811233378.0A priority Critical patent/CN109306423A/en
Publication of CN109306423A publication Critical patent/CN109306423A/en
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
    • 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
    • B22F3/02—Compacting only
    • 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
    • B22F3/1003—Use of special medium during sintering, e.g. sintering aid
    • B22F3/1007—Atmosphere
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture 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
    • B22F5/106—Tube or ring forms
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Earth Drilling (AREA)

Abstract

The invention discloses a kind of screw conveyor the accessory development of WC base cemented carbide and its manufacturing method, the formula compositions of screw conveyor accessory WC base cemented carbide are as follows: WC (88~94%), Co (6~10%), Ni (1~3%), Cr3C2(0.5~2%), MoC (0.5~2%).For the present invention with the tungsten carbide (WC) of total carbon 6.08%, granularity 2.5um for hard phase, cobalt (Co) is Binder Phase, adds chromium carbide (Cr3C2) and nickel (Ni) increase alloy corrosion resistance, the wettability of addition molybdenum carbide (MoC) increase tungsten carbide and Nian Jie phase, raising product strength.It is handled by special formulation by special process; the WC base cemented carbide of invention for helix tube axis, watt; product has hardness high, and wear-resisting, corrosion resistant advantage, soldering processes adapt to strong; it will not be cracked after soldering; and increase oil filler point on alloy, it is twice of ordinary rigid alloy life that service life, which is 10 times of steel; helix tube axis, watt service life are improved, downtime is reduced.

Description

A kind of screw conveyor the accessory development of WC base cemented carbide and its manufacturing method
Technical field
The present invention relates to screw conveyor accessory technical field, specially a kind of screw conveyor accessory is closed with WC base hard Gold is developed and its manufacturing method.
Background technique
Screw conveyor is a kind of using motor drive spiral revolution, elapses material to realize the machinery of conveying purpose.It Can horizontal, inclination or vertical transport, have that structure is simple, cross-sectional area is small, good airproof performance, easy to operate, maintenance are easy, are convenient for The advantages that enclosed conveying.Screw conveyor is divided on transporting pattern screw conveyor shaft and two kinds of Shaftless screw conveyor, It is divided into U-shaped screw conveyor and tube-type spiral conveyer in external form.
Screw conveyor is to be suitable for every profession and trade, such as building materials, chemical industry, electric power, metallurgy, coal, grain industry, is suitable for Horizontally or diagonally conveying powdered, granular and small block material, such as coal, ash, slag, cement, grain.And inside screw conveyor Helix tube axis, watt long-term operating load-bearing, wear since material hardness itself is not high or powder enters and easily.
Summary of the invention
The purpose of the present invention is to provide a kind of screw conveyor the accessory development of WC base cemented carbide and its manufacturing method, To solve helix tube axis inside screw conveyor mentioned above in the background art, watt long-term operating load-bearing, due to material sheet The problem of body hardness is not high or powder enters and easily wears.
To achieve the above object, the invention provides the following technical scheme: a kind of screw conveyor accessory is closed with WC base hard Gold and its manufacturing method, the formula composition of screw conveyor accessory WC base cemented carbide are as follows: WC (88~94%), Co (6~ 10%), Ni (1~3%), Cr3C2(0.5~2%), MoC (0.5~2%).
A kind of manufacturing method of screw conveyor accessory WC base cemented carbide, preparation process the following steps are included:
S1, by WC, Co, Ni, Cr3C2, MoC in proportion investment sintered carbide ball wet milk in, add alcohol 65L, wet-milling 48 hours；
S2, by the product discharge in step A in vacuum desiccator, the alcohol in slurry is dry sufficiently, lead to after cooling 120 mesh vibrating screens are crossed, the material after sieve is added SD-C forming agent and is mixed, and wipes broken sieve by 80 mesh after mixing and powder is made Material；
S3, powder materials obtained in step B are pressed into ф 126*30* ∮ 110, ф 116*30* ∮ according to customer requirement 100, the different size annulus such as ф 87*16* ∮ 78；
S4, the oiling through-hole that annulus obtained in step C is processed to ф 5 or ф 10 in product height center；
S5, the product processed in step D is sintered to 1440 DEG C according to technique in a vacuum furnace；
S6, by the cemented carbide cirque being sintered in step E carry out it is cooling after, by Welding helix tube axis, On watt matrix；
S7, by the helix tube axis being welded in step F, watt by peripheral milling, inner hole grinding-in conjunction be ground.
Compared with prior art, the beneficial effects of the present invention are: the present invention is with the carbonization of total carbon 6.08%, granularity 2.5um Tungsten (WC) is hard phase, and cobalt (Co) is Binder Phase, adds chromium carbide (Cr3C2) and nickel (Ni) increase alloy corrosion resistance, add carbon Change the wettability that molybdenum (MoC) increases tungsten carbide and Nian Jie phase, improves product strength.By special formulation by special process Reason, the WC base cemented carbide of invention for helix tube axis, watt, product has that hardness is high, wear-resisting, corrosion resistant advantage, solderer Skill adapts to by force, to crack after soldering, and increase oil filler point on alloy, it is general that service life, which is 10 times of steel, Twice of logical hard alloy service life, improves helix tube axis, watt service life, reduces downtime.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects It encloses.
The present invention provides a kind of technical solution: a kind of screw conveyor accessory WC base cemented carbide and its manufacturing method, The formula composition of screw conveyor accessory WC base cemented carbide are as follows: WC (88~94%), Co (6~10%), Ni (1~3%), Cr3C2(0.5~2%), MoC (0.5~2%).
Embodiment one:
The composition proportion of use are as follows:
WC:89%；
Co:7%；
Ni:2%；
Cr3C2: 1%；
MoC:1%.
The preparation process of the present embodiment the following steps are included:
S1, by WC, Co, Ni, Cr3C2, MoC in proportion investment sintered carbide ball wet milk in, add alcohol 65L, wet-milling 48 hours；
S2, by the product discharge in step A in vacuum desiccator, the alcohol in slurry is dry sufficiently, lead to after cooling 120 mesh vibrating screens are crossed, the material after sieve is added SD-C forming agent and is mixed, and wipes broken sieve by 80 mesh after mixing and powder is made Material；
S3, powder materials obtained in step B are pressed into ф 126*30* ∮ 110, ф 116*30* ∮ according to customer requirement 100, the different size annulus such as ф 87*16* ∮ 78；
S4, the oiling through-hole that annulus obtained in step C is processed to ф 5 or ф 10 in product height center；
S5, the product processed in step D is sintered to 1440 DEG C according to technique in a vacuum furnace；
S6, by the cemented carbide cirque being sintered in step E carry out it is cooling after, by Welding helix tube axis, On watt matrix；
S7, by the helix tube axis being welded in step F, watt by peripheral milling, inner hole grinding-in conjunction be ground.
Embodiment two:
The composition proportion of use are as follows:
WC:88%；
Co:6%；
Ni:2%；
Cr3C2: 2%；
MoC:2%.
The preparation process of the present embodiment the following steps are included:
S1, by WC, Co, Ni, Cr3C2, MoC in proportion investment sintered carbide ball wet milk in, add alcohol 65L, wet-milling 48 hours；
S2, by the product discharge in step A in vacuum desiccator, the alcohol in slurry is dry sufficiently, lead to after cooling 120 mesh vibrating screens are crossed, the material after sieve is added SD-C forming agent and is mixed, and wipes broken sieve by 80 mesh after mixing and powder is made Material；
S3, powder materials obtained in step B are pressed into ф 126*30* ∮ 110, ф 116*30* ∮ according to customer requirement 100, the different size annulus such as ф 87*16* ∮ 78；
S4, the oiling through-hole that annulus obtained in step C is processed to ф 5 or ф 10 in product height center；
S5, the product processed in step D is sintered to 1440 DEG C according to technique in a vacuum furnace；
S6, by the cemented carbide cirque being sintered in step E carry out it is cooling after, by Welding helix tube axis, On watt matrix；
S7, by the helix tube axis being welded in step F, watt by peripheral milling, inner hole grinding-in conjunction be ground.
Embodiment three:
The composition proportion of use are as follows:
WC:88%；
Co:10%；
Ni:1%；
Cr3C2: 0.5%；
MoC:0.5%.
The preparation process of the present embodiment the following steps are included:
S1, by WC, Co, Ni, Cr3C2, MoC in proportion investment sintered carbide ball wet milk in, add alcohol 65L, wet-milling 48 hours；
S2, by the product discharge in step A in vacuum desiccator, the alcohol in slurry is dry sufficiently, lead to after cooling 120 mesh vibrating screens are crossed, the material after sieve is added SD-C forming agent and is mixed, and wipes broken sieve by 80 mesh after mixing and powder is made Material；
S3, powder materials obtained in step B are pressed into ф 126*30* ∮ 110, ф 116*30* ∮ according to customer requirement 100, the different size annulus such as ф 87*16* ∮ 78；
S4, the oiling through-hole that annulus obtained in step C is processed to ф 5 or ф 10 in product height center；
S5, the product processed in step D is sintered to 1440 DEG C according to technique in a vacuum furnace；
S6, by the cemented carbide cirque being sintered in step E carry out it is cooling after, by Welding helix tube axis, On watt matrix；
S7, by the helix tube axis being welded in step F, watt by peripheral milling, inner hole grinding-in conjunction be ground.
Example IV:
The composition proportion of use are as follows:
WC:88%；
Co:6%；
Ni:3%；
Cr3C2: 1.5%；
MoC:1.5%.
The preparation process of the present embodiment the following steps are included:
S1, by WC, Co, Ni, Cr3C2, MoC in proportion investment sintered carbide ball wet milk in, add alcohol 65L, wet-milling 48 hours；
S2, by the product discharge in step A in vacuum desiccator, the alcohol in slurry is dry sufficiently, lead to after cooling 120 mesh vibrating screens are crossed, the material after sieve is added SD-C forming agent and is mixed, and wipes broken sieve by 80 mesh after mixing and powder is made Material；
S3, powder materials obtained in step B are pressed into ф 126*30* ∮ 110, ф 116*30* ∮ according to customer requirement 100, the different size annulus such as ф 87*16* ∮ 78；
S4, the oiling through-hole that annulus obtained in step C is processed to ф 5 or ф 10 in product height center；
S5, the product processed in step D is sintered to 1440 DEG C according to technique in a vacuum furnace；
S6, by the cemented carbide cirque being sintered in step E carry out it is cooling after, by Welding helix tube axis, On watt matrix；
S7, by the helix tube axis being welded in step F, watt by peripheral milling, inner hole grinding-in conjunction be ground.
Embodiment five:
The composition proportion of use are as follows:
WC:92%；
Co:6%；
Ni:1%；
Cr3C2: 0.5%；
MoC:0.5%.
The preparation process of the present embodiment the following steps are included:
S1, by WC, Co, Ni, Cr3C2, MoC in proportion investment sintered carbide ball wet milk in, add alcohol 65L, wet-milling 48 hours；
S2, by the product discharge in step A in vacuum desiccator, the alcohol in slurry is dry sufficiently, lead to after cooling 120 mesh vibrating screens are crossed, the material after sieve is added SD-C forming agent and is mixed, and wipes broken sieve by 80 mesh after mixing and powder is made Material；
S3, powder materials obtained in step B are pressed into ф 126*30* ∮ 110, ф 116*30* ∮ according to customer requirement 100, the different size annulus such as ф 87*16* ∮ 78；
S4, the oiling through-hole that annulus obtained in step C is processed to ф 5 or ф 10 in product height center；
S5, the product processed in step D is sintered to 1440 DEG C according to technique in a vacuum furnace；
S6, by the cemented carbide cirque being sintered in step E carry out it is cooling after, by Welding helix tube axis, On watt matrix；
S7, by the helix tube axis being welded in step F, watt by peripheral milling, inner hole grinding-in conjunction be ground.
For the present invention with the tungsten carbide (WC) of total carbon 6.08%, granularity 2.5um for hard phase, cobalt (Co) is Binder Phase, addition Chromium carbide (Cr3C2) and nickel (Ni) increase alloy corrosion resistance, addition molybdenum carbide (MoC) increases moistening for tungsten carbide and Nian Jie phase Property, improve product strength.Handled by special formulation by special process, the WC base cemented carbide of invention for helix tube axis, Watt, product has hardness height, wear-resisting, corrosion resistant advantage, and soldering processes adapt to by force, to crack after soldering, and Increase oil filler point on alloy, service life is 10 times of steel, is twice of ordinary rigid alloy life, improves helix tube Axis, watt service life, reduce downtime.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (2)

1. a kind of screw conveyor accessory WC base cemented carbide and its manufacturing method, it is characterised in that: screw conveyor accessory With the formula composition of WC base cemented carbide are as follows: WC (88~94%), Co (6~10%), Ni (1~3%), Cr3C2(0.5~ 2%), (0.5~2%) MoC.
2. a kind of manufacturing method of screw conveyor accessory WC base cemented carbide, it is characterised in that: its preparation process include with Lower step:
S1, by WC, Co, Ni, Cr3C2, MoC in proportion investment sintered carbide ball wet milk in, add alcohol 65L, wet-milling 48 is small When；
S2, by the product discharge in step A in vacuum desiccator, the alcohol in slurry is dry sufficiently, pass through 120 after cooling Mesh vibrating screen, the material after sieve are added SD-C forming agent and are mixed, and wipe broken sieve by 80 mesh after mixing and powder materials are made；
S3, powder materials obtained in step B are pressed into ф 126*30* ∮ 110, ф 116*30* ∮ 100, ф according to customer requirement The different size annulus such as 87*16* ∮ 78；
S4, the oiling through-hole that annulus obtained in step C is processed to ф 5 or ф 10 in product height center；
S5, the product processed in step D is sintered to 1440 DEG C according to technique in a vacuum furnace；
S6, the cemented carbide cirque being sintered in step E is carried out after cooling down, by Welding in helix tube axis, Wa Ji On body；
S7, by the helix tube axis being welded in step F, watt by peripheral milling, inner hole grinding-in conjunction be ground.
CN201811233378.0A 2018-10-23 2018-10-23 A kind of screw conveyor the accessory development of WC base cemented carbide and its manufacturing method Pending CN109306423A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111394635A (en) * 2020-05-06 2020-07-10 江西中孚硬质合金股份有限公司 Nonmagnetic hard alloy for instrument shaft and preparation method thereof

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JPS6329082A (en) * 1986-07-18 1988-02-06 Kawasaki Heavy Ind Ltd High precision pump
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CN105695836A (en) * 2014-11-25 2016-06-22 自贡硬质合金有限责任公司 Preparation method for WC-(Co+Ni+Cr) composite binding-phase hard alloy
CN108203785A (en) * 2018-01-10 2018-06-26 株洲科锐硬质合金股份有限公司 A kind of heterogeneous texture electro-discharge machining hard alloy plate and preparation method thereof
CN108277414A (en) * 2018-02-25 2018-07-13 株洲市超宇实业有限责任公司 A kind of production method for 3D glass heat bender hard alloy soaking plates

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111394635A (en) * 2020-05-06 2020-07-10 江西中孚硬质合金股份有限公司 Nonmagnetic hard alloy for instrument shaft and preparation method thereof
CN111394635B (en) * 2020-05-06 2021-10-08 江西中孚硬质合金股份有限公司 Nonmagnetic hard alloy for instrument shaft and preparation method thereof

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