CN109504885A - A kind of water knife sandpipe hard alloy bar and preparation method thereof - Google Patents

A kind of water knife sandpipe hard alloy bar and preparation method thereof Download PDF

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Publication number
CN109504885A
CN109504885A CN201811233795.5A CN201811233795A CN109504885A CN 109504885 A CN109504885 A CN 109504885A CN 201811233795 A CN201811233795 A CN 201811233795A CN 109504885 A CN109504885 A CN 109504885A
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China
Prior art keywords
powder
hard alloy
sandpipe
alloy bar
water knife
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CN201811233795.5A
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CN109504885B (en
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谢兴铖
曹瑞军
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GRIMN Engineering Technology Research Institute Co Ltd
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GRIMN Engineering Technology Research Institute Co Ltd
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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
    • 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
    • B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • 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
    • C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
    • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Powder Metallurgy (AREA)

Abstract

The invention discloses a kind of water knife sandpipe hard alloy bars for belonging to wear part preparation technical field and preparation method thereof.The hard alloy bar is prepared according to following raw material: 0~0.5% Co powder, 0.05~0.5% ZrC, 0.05~0.5% ZrB2Powder, 0.15~1.5% NbC, 0.15~0.5% VC, 0.15~0.5% Cr3C2, surplus be WC powder.The preparation method of the hard alloy bar mainly includes ingredient, ball milling, atomization drying, isostatic cool pressing compacting, HIP sintering.The WC mean grain size of prepared hard alloy bar is 0.16~0.2 μm, HV10>=2550, it is processed as water knife sandpipe, under 300MPa water sand mixed flow regime, service life is not less than 100h.

Description

A kind of water knife sandpipe hard alloy bar and preparation method thereof
Technical field
The invention belongs to wear part preparation technical field, in particular to a kind of water knife sandpipe hard alloy bar and its Preparation method.
Background technique
High pressure jer cutting is also known as high pressure waterjet, is a kind of novel cold conditions manufacture new process fast-developing in recent years. High pressure waterjet by the way that water is pressurized to 200~420MPa, by a dedicated cutting spray head about 800 in superfine aperture~ 100m/s sprays water column and is cut, processing matter wide with cutting material (steel, titanium, alloy, ceramics, stone material, glass etc.) range Amount is high, cutting thickness is high (up to 80mm), can cut the advantages such as arbitrary shape, safely cleaning.And water jet nozzle (water knife sand Pipe) inner hole duct bear the multiple actions such as the washing away of high pressure water flow, the high-speed resistance of solid particle and high speed injection cavitation erosion, Therefore, in order to guarantee water knife sandpipe service life, improve processing efficiency, reduction processing cost, guarantee that the internal diameter of water knife sandpipe is same Heart degree, best bright finish, high-wearing feature are particularly significant.
Summary of the invention
The purpose of the present invention is to provide a kind of water knife sandpipe hard alloy bars and preparation method thereof, and feature exists In the chemical constituent and weight percentage of each component of the hard alloy bar are as follows: 0~0.5% Co powder, 0.05~0.5% ZrC powder, 0.05~0.5% ZrB2Powder, 0.15~1.5% NbC powder, 0.15~0.5% VC powder, 0.15~0.5% Cr3C2Powder, surplus are WC powder.
Wherein ZrC powder and ZrB2Fisher particle size be 0.5 μm, the Fisher particle size of NbC powder is 0.8 μm, the Fei Shi of WC powder Granularity is 0.2~0.4 μm.
Wherein ZrC powder, ZrB2Powder, NbC powder mass ratio be 1:1:3.
The preparation method of the water knife sandpipe hard alloy bar, specifically includes the following steps: ingredient, ball milling, mist Change dry, isostatic cool pressing compression moulding and HIP sintering process.
Wherein ball-milling technology are as follows: the ratio of grinding media to material (6~4) of wet-milling: 1, rotational speed of ball-mill 60r/min, 72~96h of wet-milling time.
Wherein atomization drying technique are as follows: atomization drying inlet temperature is 200 DEG C, and outlet temperature is lower than 60 DEG C.
Wherein the isostatic cool pressing pressure of isostatic cool pressing compression moulding technique is 200MPa.
Wherein the sintering temperature of HIP sintering technique is 1450~1500 DEG C, soaking time 60min.
Hard alloy bar prepared by this method, WC mean grain size are 0.16~0.2 μm, HV10>=2550, Under 300MPa water sand mixed flow regime, service life is not less than 100h.
The invention has the benefit that providing a kind of water knife sandpipe hard alloy bar and preparation method thereof, have The characteristics of preparation temperature is low, the process time is short, production cost, high production efficiency.Powder particle pattern is not only improved, is improved The consistency of alloy；And growing up for crystal grain is effectively controlled, the hardness and wearability of alloy are improved, water knife sandpipe is improved Service life.
Specific embodiment
The present invention provides a kind of water knife sandpipe hard alloy bars and preparation method thereof, below with reference to embodiment to this Invention is described further.
Embodiment 1:
Select 0.2 μm of WC powder, 0.5 μm of ZrC powder and ZrB2Powder, 0.8 μm of NbC powder is as raw material, component It is respectively as follows: 0.5% Co powder, 0.05% ZrC powder, 0.05% ZrB2Powder, 0.15% NbC powder, 0.25% VC powder, 0.35% Cr3C2Powder, surplus are WC powder.Using absolute alcohol as ball-milling medium, ratio of grinding media to material 6:1, rotational speed of ball-mill 60r/min, wet-milling Time 72h.When atomization drying, inlet temperature is 200 DEG C, and outlet temperature is lower than 60 DEG C.When compression moulding, isostatic cool pressing pressure is 200MPa, HIP sintering moulding pressure are 150MPa, and temperature is 1450 DEG C, soaking time 60min.
The WC mean grain size of hard alloy bar manufactured in the present embodiment is 0.16 μm, HV10It is 2590, is processed as water knife Sandpipe, under standard condition, service life reaches 100h.
Embodiment 2:
Select 0.3 μm of WC powder, 0.5 μm of ZrC powder and ZrB2Powder, 0.8 μm of NbC powder is as raw material, component It is respectively as follows: 0.25% Co powder, 0.25% ZrC powder, 0.25% ZrB2Powder, 0.75% NbC powder, 0.15% VC powder, 0.5% Cr3C2Powder, surplus are WC powder.Using absolute alcohol as ball-milling medium, ratio of grinding media to material 5:1, rotational speed of ball-mill 60r/min, wet-milling Time 84h.When atomization drying, inlet temperature is 200 DEG C, and outlet temperature is lower than 60 DEG C.When compression moulding, isostatic cool pressing pressure is 200MPa, HIP sintering moulding pressure are 150MPa, and temperature is 1480 DEG C, soaking time 60min.
The WC mean grain size of hard alloy bar manufactured in the present embodiment is 0.18 μm, HV10It is 2570, is processed as water knife Sandpipe, under standard condition, service life reaches 100h.
Embodiment 3:
Select 0.4 μm of WC powder, 0.5 μm of ZrC powder and ZrB2Powder, 0.8 μm of NbC powder is as raw material, component It is respectively as follows: 0.5% ZrC powder, 0.5% ZrB2Powder, 1.5% NbC powder, 0.5% VC powder, 0.15% Cr3C2It is powder, remaining Amount is WC powder.Using absolute alcohol as ball-milling medium, ratio of grinding media to material 4:1, rotational speed of ball-mill 60r/min, wet-milling time 96h.Atomization drying When, inlet temperature is 200 DEG C, and outlet temperature is lower than 60 DEG C.When compression moulding, isostatic cool pressing pressure is 200MPa, hot isostatic pressing Sintering moulding pressure is 150MPa, and temperature is 1500 DEG C, soaking time 60min.
The WC mean grain size of hard alloy bar manufactured in the present embodiment is 0.2 μm, HV10It is 2550, is processed as water knife Sandpipe, under standard condition, service life reaches 100h.

Claims (4)

1. a kind of water knife sandpipe hard alloy bar, which is characterized in that the chemical constituent and each group of the hard alloy bar Divide weight percent are as follows: 0~0.5% Co powder, 0.05~0.5% ZrC powder, 0.05~0.5% ZrB2Powder, 0.15~ 1.5% NbC powder, 0.15~0.5% VC powder, 0.15~0.5% Cr3C2Powder, surplus are WC powder.
2. a kind of water knife sandpipe hard alloy bar according to claim 1, which is characterized in that the ZrC powder and ZrB2 Fisher particle size be 0.5 μm, the Fisher particle size of NbC powder is 0.8 μm, and the Fisher particle size of WC powder is 0.2~0.4 μm.
3. a kind of water knife sandpipe hard alloy bar according to claim 1, which is characterized in that the ZrC powder, ZrB2 Powder, NbC powder mass ratio be 1:1:3.
4. a kind of preparation method of water knife sandpipe hard alloy bar described in claim 1-3, which is characterized in that specific packet Include following steps: ingredient, ball milling, atomization drying, isostatic cool pressing compression moulding and HIP sintering process；
The ball-milling technology are as follows: the ratio of grinding media to material (6~4) of wet-milling: 1, rotational speed of ball-mill 60r/min, 72~96h of wet-milling time；
The atomization drying technique are as follows: atomization drying inlet temperature is 200 DEG C, and outlet temperature is lower than 60 DEG C；
The isostatic cool pressing pressure of the isostatic cool pressing compression moulding technique is 200MPa；
The sintering temperature of the HIP sintering technique is 1450~1500 DEG C, soaking time 60min.
CN201811233795.5A 2018-10-23 2018-10-23 Hard alloy bar for water jet cutting sand pipe and preparation method thereof Active CN109504885B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110449589A (en) * 2019-09-05 2019-11-15 蓬莱市超硬复合材料有限公司 Cold threaded hole bar forming method in one kind
CN110981488A (en) * 2019-12-24 2020-04-10 有研工程技术研究院有限公司 Ultrahigh-hardness aspheric glass lens mold material and preparation method thereof
CN112661514A (en) * 2021-01-08 2021-04-16 厦门钨业股份有限公司 Preparation method and mold of water jet sand pipe for ultrahigh pressure water cutting

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1815580A1 (en) * 1967-12-21 1969-07-24 Ugine Carbone Carbide based on WC-TiC-Co
JPS4829964B1 (en) * 1964-11-28 1973-09-14
CN102628138A (en) * 2012-03-23 2012-08-08 华南理工大学 Trace cobalt-containing tungsten carbide without bonding phase and preparation method thereof
CN103667757A (en) * 2013-12-12 2014-03-26 河南省大地合金股份有限公司 Preparation method of hard alloy bar for PCB (Printed Circuit Board) micro drill

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4829964B1 (en) * 1964-11-28 1973-09-14
DE1815580A1 (en) * 1967-12-21 1969-07-24 Ugine Carbone Carbide based on WC-TiC-Co
CN102628138A (en) * 2012-03-23 2012-08-08 华南理工大学 Trace cobalt-containing tungsten carbide without bonding phase and preparation method thereof
CN103667757A (en) * 2013-12-12 2014-03-26 河南省大地合金股份有限公司 Preparation method of hard alloy bar for PCB (Printed Circuit Board) micro drill

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110449589A (en) * 2019-09-05 2019-11-15 蓬莱市超硬复合材料有限公司 Cold threaded hole bar forming method in one kind
CN110981488A (en) * 2019-12-24 2020-04-10 有研工程技术研究院有限公司 Ultrahigh-hardness aspheric glass lens mold material and preparation method thereof
CN112661514A (en) * 2021-01-08 2021-04-16 厦门钨业股份有限公司 Preparation method and mold of water jet sand pipe for ultrahigh pressure water cutting

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