CN105039821B - Preparation method for non-magnetic anticorrosion abrasion-resistant cemented carbide - Google Patents
Preparation method for non-magnetic anticorrosion abrasion-resistant cemented carbide Download PDFInfo
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- CN105039821B CN105039821B CN201510450930.1A CN201510450930A CN105039821B CN 105039821 B CN105039821 B CN 105039821B CN 201510450930 A CN201510450930 A CN 201510450930A CN 105039821 B CN105039821 B CN 105039821B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000005299 abrasion Methods 0.000 title abstract 3
- 239000002002 slurry Substances 0.000 claims abstract description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 238000000498 ball milling Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000007605 air drying Methods 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000013019 agitation Methods 0.000 claims description 23
- 229910045601 alloy Inorganic materials 0.000 claims description 18
- 239000000956 alloy Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 238000005245 sintering Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000005422 blasting Methods 0.000 claims description 3
- 210000004080 milk Anatomy 0.000 claims description 3
- 235000013336 milk Nutrition 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 238000001238 wet grinding Methods 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000005307 ferromagnetism Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910001004 magnetic alloy Inorganic materials 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
The invention relates to a preparation method for non-magnetic anticorrosion abrasion-resistant cemented carbide. The preparation method comprises the following steps that (1) 12% of nickel powder, 0.5% of chromium powder, 0.5% of molybdenum powder, 1% of tantalum powder and the balance tungsten carbide by mass are weighed; the raw materials are mixed evenly to form slurry; the slurry is added to a wet mill; mixed medium absolute alcohol is added for ball-milling to form slurry; (2) after the ball-milling, the slurry is put into a double-helix mixer to be dried, the alcohol is extracted and recovered through an alcohol recovery utensil, and the dried slurry is screened through a vibrating screen; (3) the mixture and a forming agent are added to the mixer; the forming agent and the mixture are in a ratio of 80 g/kg; the wet part and the dry part are mixed well and formed preliminarily after 3 hours; discharging is carried out; and screening treatment is carried out after the discharging; and (4) the preliminarily formed product is put into a mold and placed in an extruding machine to be extruded at the pressure of 100-300 Mpa, and air drying is carried out for 72 hours. The cemented carbide prepared with the preparation method has the characteristics of being very high in hardness, abrasion resistance, anti-corrodibility and the like.
Description
Technical field
The present invention relates to hard alloy preparing technical field, and in particular to a kind of preparation without magnetic anticorrosion antiwear hard alloy
Method.
Background technology
Without magnetic anticorrosion antiwear hard alloy at aspects such as the mold for forming of Powder Metallurgy Industry ferromagnetism powder, sealing rings
With obvious advantage, not only with very high hardness and wearability, and sticking to mould when can avoid ferromagnetism powder compacting, carry
The resistance to corrosion of highly dense seal ring.In existing non-magnetic alloy manufacture method, by add multiple element, by subzero treatment,
Ageing Treatment improves the hardness and intensity of non-magnetic alloy, but hard alloy carries out the effect of the modes such as deep cooling, Ageing Treatment and also deposits
In dispute, the product larger to substance is also unsuitable for or effect is difficult to detect.The control difficulty of alloy carbon content is larger at present, thing
The uniformity of the concordance and green density of material is difficult to ensure that particularly crackle, flexural deformation easily occurs in massive article, it is impossible to
Ensure the densification of massive article and the uniformity of performance.
It is required for using Double helix shaft device when preparing without magnetic anticorrosion antiwear hard alloy, but, conventional at present
All there is material and mix uneven, react insufficient, manipulate loaded down with trivial details in twin-spiral mixer when the mixing of liquid and solid is carried out
Etc. defect, so as to cause mixed-precision low, mixing efficiency difference the problems such as.
The content of the invention
For above-mentioned technical problem, the present invention provides a kind of component simply, and hardness is high, wearability is good, resistance to corrosion is strong
The preparation method without magnetic anticorrosion antiwear hard alloy.
Realize that technical scheme is as follows：
Preparation method without magnetic anticorrosion antiwear hard alloy, comprises the following steps；
The first step：12% nikel powder, 0.5% chromium powder, 0.5% molybdenum powder, 1% tantalum powder and surplus tungsten carbide is weighed in mass ratio,
These raw material mix homogeneously are formed slurry to add in wet milk, and adds blending agent anhydrous alcohol carries out ball milling formation slurry
Material, per aerofluxuss in 24 hours once, the wet grinding time is 36 hours, and slurry crosses 400 mesh sieves；
Second step：After ball milling, above-mentioned slurry is placed in twin-spiral mixer and is dried, extract ethanol out, by wine
Essence reclaims vessel and is reclaimed, and dried slurry is sieved by vibrosieve；
3rd step：Mixture and forming agent are added in blender, the ratio of forming agent and mixture is 80g/kg, dry and wet
First one-step forming after mixing well 3 hours, you can discharging, process of sieving after discharging；
4th step：The product of first one-step forming is loaded and is placed in being extruded in extruder in mould, pressure is 100-
300MPa, is then air-dried 72 hours again；
5th step：Product after air-drying is loaded in vacuum sintering furnace, sintering temperature is 1300 DEG C -1600 DEG C, insulation 60
Minute, cooling of coming out of the stove can be obtained without magnetic anticorrosion antiwear hard alloy after blasting treatment.
Employ such scheme acquisition without magnetic anticorrosion antiwear hard alloy, with very high hardness, wearability and anti-corrosion
Property, can effectively ensure the uniformity of the concordance and green density of material, prevent the phenomenons such as crackle, flexural deformation.
Twin-spiral mixer includes conical shell, and motor, rotating shaft, connecting shaft, screw agitation shaft, the motor are arranged on cone
Shape cylinder is outer and is connected with one end of rotating shaft, the other end of rotating shaft be arranged in conical shell and with connecting shaft in the middle part of fixed connect
Connect, screw agitation shaft is provided with two, be connected to the two ends of connecting shaft, screw agitation shaft is elastic connection with connecting shaft, even
The circuit orbit being fixed on conical shell inwall is provided with above spindle, and the circuit orbit is by continuous raised and concave surface structure
Into, slide guide device is provided between circuit orbit and screw agitation shaft, the slide guide device one end is fixed on auger
On axle, the other end is connected on circuit orbit.
Such scheme is employed, by Motor drive, rotating shaft can drive connecting shaft to rotate, i.e., screw agitation shaft is with rotating shaft
Rotate for the center of circle, so in the presence of screw agitation shaft, the material in conical shell can be with full and uniform mixing, but this is tightly
The mixing being limited in horizontal direction；During the Stirring of screw agitation shaft, due to circuit orbit by continuous raised and
Concave surface constitute, the circuit orbit with rotating shaft as the center of circle, it is corresponding with screw agitation shaft, so in the effect of slide guide device
Under, and because screw agitation shaft and connecting shaft are elastic connection, i.e., connected by spring or shell fragment, so screw agitation shaft can be with
In the vertical direction is moved up and down, and under high-speed rotation, screw agitation shaft can form up-down vibration, can so make material exist
It is sufficiently mixed on vertical direction.In sum, material in the horizontal direction with can be stirred on vertical direction, that is, reach full side
Position mixing, so contributes to material and fully reflects, mixed effect substantially, the features such as efficiency is improved.
Slide guide device includes the shell with cavity, the spring being arranged in cavity, the briquetting above spring
With telescopic guide post, the lower end of guide post is fixedly connected with briquetting, and upper end is provided with the chute being adapted with circuit orbit, excellent
Point is that guide post is engaged with circuit orbit, stably can be moved on circuit orbit by chute, so as to screw agitation shaft
Move up and down, when guide post in circuit orbit projection where when, briquetting can extrusion spring, i.e. spiral guide transport downwards
It is dynamic；When guide post is on the circuit orbit concave surface, spring can back-pressure briquetting, i.e. spiral guide move upwards, it is anti-with this
Multiple, spiral guide forms up-down vibration, and firmly, effect is obvious for simple structure.
The joint face of guide post and shell is provided with least two bar shaped gathering sill, and shell is provided with and bar shaped gathering sill
Adaptable guide pad, advantage are to prevent guide post from departing from shell, it is ensured that the fastness of structure.
The upper end of conical shell is provided with material inlet.
Two screw agitation shafts are for one is long and the other is short, asymmetric setting.
Description of the drawings
Fig. 1 is the structural representation of double spiral agitator in the present invention；
Fig. 2 is the enlarged drawing of A in Fig. 1；
Specific embodiment
The present invention is further described with specific embodiment below in conjunction with the accompanying drawings.
Preparation method without magnetic anticorrosion antiwear hard alloy, comprises the following steps；
The first step：12% nikel powder, 0.5% chromium powder, 0.5% molybdenum powder, 1% tantalum powder and surplus tungsten carbide is weighed in mass ratio,
These raw material mix homogeneously are formed slurry to add in wet milk, and adds blending agent anhydrous alcohol carries out ball milling formation slurry
Material, per aerofluxuss in 24 hours once, the wet grinding time is 36 hours, and slurry crosses 400 mesh sieves；
Second step：After ball milling, above-mentioned slurry is placed in twin-spiral mixer and is dried, extract ethanol out, by wine
Essence reclaims vessel and is reclaimed, and dried slurry is sieved by vibrosieve；
3rd step：Mixture and forming agent are added in blender, the ratio of forming agent and mixture is 80g/kg, dry and wet
First one-step forming after mixing well 3 hours, you can discharging, process of sieving after discharging；
4th step：The product of first one-step forming is loaded and is placed in being extruded in extruder in mould, pressure is 100-
300MPa, is then air-dried 72 hours again；
5th step：Product after air-drying is loaded in vacuum sintering furnace, sintering temperature is 1300 DEG C -1600 DEG C, insulation 60
Minute, cooling of coming out of the stove can be obtained without magnetic anticorrosion antiwear hard alloy after blasting treatment.
Such as Fig. 1 and Fig. 2, twin-spiral mixer includes conical shell 1, motor 2, rotating shaft 3, connecting shaft 4, screw agitation shaft 5,
The motor 2 is arranged on outside conical shell 1 and is connected with one end of rotating shaft 3, and the other end of rotating shaft 3 is arranged in conical shell 1
And be fixedly connected with the middle part of connecting shaft 4, screw agitation shaft 5 is provided with two, is connected to the two ends of connecting shaft 4, auger
Axle 5 is elastic connection with connecting shaft 4, and the top of connecting shaft 4 is provided with the circuit orbit 6 being fixed on 1 inwall of conical shell, described
Circuit orbit 6 is made up of continuous raised 62 and concave surface 61, is provided with slide-and-guide dress between circuit orbit 6 and screw agitation shaft 5
7 are put, the slide guide device one end is fixed in screw agitation shaft, and the other end is connected on circuit orbit.
Slide guide device 7 includes the shell 72 with cavity, and the spring 71 being arranged in cavity, above spring 71
Briquetting 73 and telescopic guide post 76, the lower end of guide post 76 is fixedly connected with briquetting 73, and upper end is provided with and circuit orbit 6
Adaptable chute 77, advantage are that guide post is engaged with circuit orbit, can the stably shifting on circuit orbit by chute
It is dynamic, so as to screw agitation shaft is moved up and down, when guide post is where circuit orbit projection, briquetting can extrusion spring,
I.e. spiral guide is moved downward；When guide post is on circuit orbit concave surface, spring being capable of back-pressure briquetting, i.e. spirally-guided
Device is moved upwards, and with this repeatedly, spiral guide forms up-down vibration, and firmly, effect is obvious for simple structure.
The joint face of guide post 76 and shell 72 is provided with least two bar shaped gathering sill 75, and shell 72 is provided with and bar
The guide pad 74 that shape gathering sill 75 is adapted, advantage are to prevent guide post from departing from shell, it is ensured that the fastness of structure.
The upper end of conical shell 1 is provided with material inlet 8.
Two screw agitation shafts are for one is long and the other is short, asymmetric setting.
Claims (4)
1. the preparation method without magnetic anticorrosion antiwear hard alloy, it is characterised in that：Comprise the following steps；
The first step：12% nikel powder, 0.5% chromium powder, 0.5% molybdenum powder, 1% tantalum powder and surplus tungsten carbide is weighed in mass ratio, by this
A little raw material mix homogeneously are formed during slurries add wet milks, and are added blending agent anhydrous alcohol and carried out ball milling and form slurry, often
Once, the wet grinding time is 36 hours, and slurry crosses 400 mesh sieves for aerofluxuss in 24 hours；
Second step：After ball milling, above-mentioned slurry is placed in twin-spiral mixer and is dried, extract ethanol out, returned by ethanol
Receive vessel to be reclaimed, dried slurry is sieved by vibrosieve；
3rd step：Mixture and forming agent are added in blender, the ratio of forming agent and mixture is 80g/kg, dry and wet is mixed well
First one-step forming after 3 hours, you can discharging, process of sieving after discharging；
4th step：The product of first one-step forming is loaded and is placed in being extruded in extruder in mould, pressure is 100-300MPa,
Then air-dry 72 hours again；
5th step：Product after air-drying is loaded in vacuum sintering furnace, sintering temperature is 1300 DEG C -1600 DEG C, is incubated 60 minutes,
Come out of the stove cooling, after blasting treatment can without magnetic anticorrosion antiwear hard alloy；
The twin-spiral mixer includes conical shell, and motor, rotating shaft, connecting shaft, screw agitation shaft, the motor are arranged on cone
Shape cylinder is outer and is connected with one end of rotating shaft, the other end of rotating shaft be arranged in conical shell and with connecting shaft in the middle part of fixed connect
Connect, screw agitation shaft is provided with two, be connected to the two ends of connecting shaft, screw agitation shaft is elastic connection with connecting shaft, even
The circuit orbit being fixed on conical shell inwall is provided with above spindle, and the circuit orbit is by continuous raised and concave surface structure
Into, slide guide device is provided between circuit orbit and screw agitation shaft, the slide guide device one end is fixed on auger
On axle, the other end is connected on circuit orbit；The slide guide device includes the shell with cavity, is arranged in cavity
Spring, the briquetting and telescopic guide post above spring, the lower end of guide post are fixedly connected with briquetting, upper end be provided with
The chute that circuit orbit is adapted.
2. the preparation method according to claim 1 without magnetic anticorrosion antiwear hard alloy, it is characterised in that：The guide post with
The joint face of shell is provided with least two bar shaped gathering sill, and shell is provided with the guide pad being adapted with bar shaped gathering sill.
3. the preparation method according to claim 1 without magnetic anticorrosion antiwear hard alloy, it is characterised in that：The conical shell
Upper end be provided with material inlet.
4. the preparation method according to claim 1 without magnetic anticorrosion antiwear hard alloy, it is characterised in that：Described two spirals
Shaft is for one is long and the other is short, asymmetric setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510450930.1A CN105039821B (en) | 2015-07-28 | 2015-07-28 | Preparation method for non-magnetic anticorrosion abrasion-resistant cemented carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510450930.1A CN105039821B (en) | 2015-07-28 | 2015-07-28 | Preparation method for non-magnetic anticorrosion abrasion-resistant cemented carbide |
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| Publication Number | Publication Date |
|---|---|
| CN105039821A CN105039821A (en) | 2015-11-11 |
| CN105039821B true CN105039821B (en) | 2017-03-22 |
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| CN201510450930.1A Expired - Fee Related CN105039821B (en) | 2015-07-28 | 2015-07-28 | Preparation method for non-magnetic anticorrosion abrasion-resistant cemented carbide |
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| CN106269136A (en) * | 2016-08-18 | 2017-01-04 | 无锡市稼宝药业有限公司 | A kind of pesticide manufactures raw material and grinds powder device |
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| CN2647419Y (en) * | 2003-09-10 | 2004-10-13 | 厦门金鹭特种合金有限公司 | Stirring machine for producing tungsten carbide powder |
| CN101215662B (en) * | 2008-01-07 | 2012-07-04 | 刘嵘 | Tungsten alloy used for jewelry and ornamental article, and preparation method thereof |
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Effective date of registration: 20170527 Address after: Fujian Longzhou Industrial Park in Fujian province 364000 3-4 block (Industrial Road No. 68) Patentee after: FUJIAN AISHITE NEW MATERIAL TECHNOLOGY CO.,LTD. Address before: 213000 Jiangsu province Changzhou City New District Xixiashu Town Industrial Park, Tsui Ping Road No. 9 Patentee before: Changzhou Xili Alloy Tools Co.,Ltd. |
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Granted publication date: 20170322 |