CN109570496A - A kind of processing method of 13% bar of cobalt - Google Patents
A kind of processing method of 13% bar of cobalt Download PDFInfo
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- CN109570496A CN109570496A CN201811520068.7A CN201811520068A CN109570496A CN 109570496 A CN109570496 A CN 109570496A CN 201811520068 A CN201811520068 A CN 201811520068A CN 109570496 A CN109570496 A CN 109570496A
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- 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
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- 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
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- 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
- B22F3/24—After-treatment of workpieces or articles
-
- 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
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- 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
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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
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
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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
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of processing methods of 13% bar of cobalt, method includes the following steps: step 1: raw material preparation: weighing quantitative metal cobalt powder and hard compounds powder respectively by accurate weighing apparatus, step 2: raw material mixing: by weighed metal cobalt powder and hard compounds powder are put into the stir chamber in blender and are adequately stirred in step 1, step 3: compression moulding: the mixed material in step 2 is put into bar mold, and the pressure for applying 15-600MPa to it makes material that required shape be presented, step 4: sintering: the semi-finished product bar shaped in step 3 is put into vacuum high temperature furnace and is heated, step 5: the bar prepared post-processing: is subjected to pressure-sizing, rolling, it squeezes, quenching, surface hardening, immersion oil, and infiltration.It is that the bar intensity that Raw material processing goes out is significantly larger than existing bar intensity by a certain proportion of metal cobalt powder and hard compounds, meets the needs of present industrial building industry.
Description
Technical field
The present invention relates to hard alloy bar manufacturing technology field, specially a kind of processing method of 13% bar of cobalt.
Background technique
Bar is widely used in Industry and Construction, with the fast development of DESIGN TREND OF MODERN INDUSTRIAL ARCHITECTURE industry, original bar
Intensity has already fallen behind the needs in the prior art, and hard alloy is to pass through powder by the hard compounds and binding metal of refractory metal
A kind of alloy material made of last metallurgical technology.Hard alloy is with hardness is high, wear-resisting, intensity and toughness are preferable, heat-resisting, corrosion resistant
Erosion etc. a series of excellent performances, especially its high rigidity and wearability, even if 500 DEG C at a temperature of keep substantially not
Become, still has very high hardness at 1000 DEG C.Hard alloy is widely used as cutter material, such as lathe tool, milling cutter, planing tool, drill bit, boring
Knife etc. is used for cutting cast iron, non-ferrous metal, plastics, chemical fibre, graphite, glass, stone material, can also be used to cutting heat resisting steel, stainless
The difficult to machine materials such as steel, potassium steel, tool steel.If the raw material that hard alloy is processed as bar, the property of bar
It can greatly promote.
Summary of the invention
The purpose of the present invention is to provide a kind of processing methods of 13% bar of cobalt, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of processing method of 13% bar of cobalt, this method
The following steps are included:
Step 1: raw material preparation: weighing quantitative metal cobalt powder and hard compounds powder by accurate weighing apparatus respectively,
Wherein the mass ratio of metal cobalt powder and hard compounds powder is 13:87；
Step 2: raw material mixing: by weighed metal cobalt powder and hard compounds powder are put into blender in step 1
Stir chamber in adequately stirred, and plasticizer is added during stirring；
Step 3: compression moulding: the mixed material in step 2 is put into bar mold, and 15- is applied to it
The pressure of 600MPa makes material that required shape be presented；
Step 4: sintering: the semi-finished product bar shaped in step 3 is put into vacuum high temperature furnace and is heated, wherein heating
Temperature is 900 degrees Celsius to 1200 degrees Celsius；
Step 5: the bar prepared post-processing: is subjected to pressure-sizing, rolling, extruding, quenching, surface hardening, immersion oil and infiltration.
Preferably, it first needs to prepare metal cobalt powder and hard compounds powder in the raw material weighing, wherein using from admittedly
State Metal and Alloy produces the method for metal powder using mechanical crushing method and couple corrosion method, then to the metallic cobalt after producing
Powder and hard compounds powder are screened, wherein screening 500 microns to 1000 microns of granularity of metal cobalt powder by filter
With hard compounds powder, wherein hard compounds powder uses tungsten-carbide powder, titanium carbide powder and tantalum carbide powder.
Preferably, the plasticizer in the raw material mixing uses machine oil, rubber or paraffin.
Preferably, the green compact of respective shapes and size is made using extrusion forming process in the compression moulding, and makes its tool
There are certain density and intensity.
Preferably, the green compact after the sinter molding makes it obtain required final physical mechanical performance by sintering,
Sintering uses unary system sintering process, and sintering temperature is below metal cobalt powder and hard compounds melting point.
Compared with prior art, the beneficial effects of the present invention are: passing through a certain proportion of metal cobalt powder and hard compounds
The bar intensity gone out for Raw material processing is significantly larger than existing bar intensity, meets the needs of present industrial building industry.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment one
The present invention provides a kind of technical solution: a kind of processing method of 13% bar of cobalt, method includes the following steps:
Step 1: raw material preparation: weighing quantitative metal cobalt powder and hard compounds powder by accurate weighing apparatus respectively,
Wherein the mass ratio of metal cobalt powder and hard compounds powder is 13:87, and the metal cobalt powder in the present embodiment is 1.3 tons, hard
The gross mass of compound powder is 8.7 tons, wherein tungsten-carbide powder, titanium carbide powder and the tantalum carbide in hard compounds powder
Powder is respectively 3 tons, 2.5 tons and 3.2 tons；
Step 2: raw material mixing: by weighed metal cobalt powder and hard compounds powder are put into blender in step 1
Stir chamber in adequately stirred, and plasticizer is added during stirring；
Step 3: compression moulding: the mixed material in step 2 is put into bar mold, and 15- is applied to it
The pressure of 600MPa makes material that required shape be presented, and the application pressure value wherein used in the present embodiment is 120Mpa；
Step 4: sintering: the semi-finished product bar shaped in step 3 is put into vacuum high temperature furnace and is heated, wherein heating
Temperature is 900 degrees Celsius to 1200 degrees Celsius, and the heating temperature used in the present embodiment is 955 degree Celsius；
Step 5: the bar prepared post-processing: is subjected to pressure-sizing, rolling, extruding, quenching, surface hardening, immersion oil and infiltration.
Further, in the above scheme, it first needs to prepare metal cobalt powder and hard compounds powder in the raw material weighing
End, wherein using mechanical crushing method and couple corrosion method using the method for producing metal powder from solid metallic and alloy, then
To after producing metal cobalt powder and hard compounds powder screen, wherein by filter screen 500 microns of granularity arrive
1000 microns of metal cobalt powder and hard compounds powder, wherein hard compounds powder uses tungsten-carbide powder, carbonized titanium powder
End and tantalum carbide powder, the particle size average of metal cobalt powder and hard compounds powder in the present embodiment are 675 microns.
Further, in the above scheme, the plasticizer in the raw material mixing uses machine oil, rubber or paraffin, this reality
Applying the machine oil dosage in example is 20 kilograms.
Further, in the above scheme, respective shapes and size is made using extrusion forming process in the compression moulding
Green compact, and make it have certain density and intensity.
Further, in the above scheme, required by the green compact after the sinter molding obtains it by sintering most
Whole physical mechanical property, sintering use unary system sintering process, and sintering temperature is below metal cobalt powder and hard compounds powder is molten
Point, referring to data: the fusing point of metallic cobalt is 1493 degrees Celsius, and the fusing point of tungsten carbide is 2870 degrees Celsius, and the fusing point of titanium carbide is
3140 degrees Celsius, the fusing point of tantalum carbide is 3880 degrees Celsius.
The bar tensile strength that the present embodiment measures is 441Mpa, and the tensile strength highest reference value of common bar is
380Mpa, current standard unit of stress are MPa, 1MPa=10Kg/cm2
Embodiment two
The present invention provides a kind of technical solution: a kind of processing method of 13% bar of cobalt, method includes the following steps:
Step 1: raw material preparation: weighing quantitative metal cobalt powder and hard compounds powder by accurate weighing apparatus respectively,
Wherein the mass ratio of metal cobalt powder and hard compounds powder is 13:87, and the metal cobalt powder in the present embodiment is 1.3 tons, hard
The gross mass of compound powder is 8.7 tons, wherein tungsten-carbide powder, titanium carbide powder and the tantalum carbide in hard compounds powder
Powder is respectively 3 tons, 2.5 tons and 3.2 tons；
Step 2: raw material mixing: by weighed metal cobalt powder and hard compounds powder are put into blender in step 1
Stir chamber in adequately stirred, and plasticizer is added during stirring；
Step 3: compression moulding: the mixed material in step 2 is put into bar mold, and 15- is applied to it
The pressure of 600MPa makes material that required shape be presented, and the application pressure value wherein used in the present embodiment is 120Mpa；
Step 4: sintering: the semi-finished product bar shaped in step 3 is put into vacuum high temperature furnace and is heated, wherein heating
Temperature is 900 degrees Celsius to 1200 degrees Celsius, and the heating temperature used in the present embodiment is 1000 degree Celsius；
Step 5: the bar prepared post-processing: is subjected to pressure-sizing, rolling, extruding, quenching, surface hardening, immersion oil and infiltration.
Further, in the above scheme, it first needs to prepare metal cobalt powder and hard compounds powder in the raw material weighing
End, wherein using mechanical crushing method and couple corrosion method using the method for producing metal powder from solid metallic and alloy, then
To after producing metal cobalt powder and hard compounds powder screen, wherein by filter screen 500 microns of granularity arrive
1000 microns of metal cobalt powder and hard compounds powder, wherein hard compounds powder uses tungsten-carbide powder, carbonized titanium powder
End and tantalum carbide powder, the particle size average of metal cobalt powder and hard compounds powder in the present embodiment are 675 microns.
Further, in the above scheme, the plasticizer in the raw material mixing uses machine oil, rubber or paraffin, this reality
Applying the machine oil dosage in example is 20 kilograms.
Further, in the above scheme, respective shapes and size is made using extrusion forming process in the compression moulding
Green compact, and make it have certain density and intensity.
Further, in the above scheme, required by the green compact after the sinter molding obtains it by sintering most
Whole physical mechanical property, sintering use unary system sintering process, and sintering temperature is below metal cobalt powder and hard compounds powder is molten
Point, referring to data: the fusing point of metallic cobalt is 1493 degrees Celsius, and the fusing point of tungsten carbide is 2870 degrees Celsius, and the fusing point of titanium carbide is
3140 degrees Celsius, the fusing point of tantalum carbide is 3880 degrees Celsius.
The bar tensile strength that the present embodiment measures is 453Mpa, and the tensile strength highest reference value of common bar is
380Mpa, current standard unit of stress are MPa, 1MPa=10Kg/cm2
Embodiment three
The present invention provides a kind of technical solution: a kind of processing method of 13% bar of cobalt, method includes the following steps:
Step 1: raw material preparation: weighing quantitative metal cobalt powder and hard compounds powder by accurate weighing apparatus respectively,
Wherein the mass ratio of metal cobalt powder and hard compounds powder is 13:87, and the metal cobalt powder in the present embodiment is 1.3 tons, hard
The gross mass of compound powder is 8.7 tons, wherein tungsten-carbide powder, titanium carbide powder and the tantalum carbide in hard compounds powder
Powder is respectively 3 tons, 2.5 tons and 3.2 tons；
Step 2: raw material mixing: by weighed metal cobalt powder and hard compounds powder are put into blender in step 1
Stir chamber in adequately stirred, and plasticizer is added during stirring；
Step 3: compression moulding: the mixed material in step 2 is put into bar mold, and 15- is applied to it
The pressure of 600MPa makes material that required shape be presented, and the application pressure value wherein used in the present embodiment is 120Mpa；
Step 4: sintering: the semi-finished product bar shaped in step 3 is put into vacuum high temperature furnace and is heated, wherein heating
Temperature is 900 degrees Celsius to 1200 degrees Celsius, and the heating temperature used in the present embodiment is 1100 degree Celsius；
Step 5: the bar prepared post-processing: is subjected to pressure-sizing, rolling, extruding, quenching, surface hardening, immersion oil and infiltration.
Further, in the above scheme, it first needs to prepare metal cobalt powder and hard compounds powder in the raw material weighing
End, wherein using mechanical crushing method and couple corrosion method using the method for producing metal powder from solid metallic and alloy, then
To after producing metal cobalt powder and hard compounds powder screen, wherein by filter screen 500 microns of granularity arrive
1000 microns of metal cobalt powder and hard compounds powder, wherein hard compounds powder uses tungsten-carbide powder, carbonized titanium powder
End and tantalum carbide powder, the particle size average of metal cobalt powder and hard compounds powder in the present embodiment are 675 microns.
Further, in the above scheme, the plasticizer in the raw material mixing uses machine oil, rubber or paraffin, this reality
Applying the machine oil dosage in example is 20 kilograms.
Further, in the above scheme, respective shapes and size is made using extrusion forming process in the compression moulding
Green compact, and make it have certain density and intensity.
Further, in the above scheme, required by the green compact after the sinter molding obtains it by sintering most
Whole physical mechanical property, sintering use unary system sintering process, and sintering temperature is below metal cobalt powder and hard compounds powder is molten
Point, referring to data: the fusing point of metallic cobalt is 1493 degrees Celsius, and the fusing point of tungsten carbide is 2870 degrees Celsius, and the fusing point of titanium carbide is
3140 degrees Celsius, the fusing point of tantalum carbide is 3880 degrees Celsius.
The bar tensile strength that the present embodiment measures is 462Mpa, and the tensile strength highest reference value of common bar is
380Mpa, current standard unit of stress are MPa, 1MPa=10Kg/cm2
Example IV
The present invention provides a kind of technical solution: a kind of processing method of 13% bar of cobalt, method includes the following steps:
Step 1: raw material preparation: weighing quantitative metal cobalt powder and hard compounds powder by accurate weighing apparatus respectively,
Wherein the mass ratio of metal cobalt powder and hard compounds powder is 13:87, and the metal cobalt powder in the present embodiment is 1.3 tons, hard
The gross mass of compound powder is 8.7 tons, wherein tungsten-carbide powder, titanium carbide powder and the tantalum carbide in hard compounds powder
Powder is respectively 3 tons, 2.5 tons and 3.2 tons；
Step 2: raw material mixing: by weighed metal cobalt powder and hard compounds powder are put into blender in step 1
Stir chamber in adequately stirred, and plasticizer is added during stirring；
Step 3: compression moulding: the mixed material in step 2 is put into bar mold, and 15- is applied to it
The pressure of 600MPa makes material that required shape be presented, and the application pressure value wherein used in the present embodiment is 120Mpa；
Step 4: sintering: the semi-finished product bar shaped in step 3 is put into vacuum high temperature furnace and is heated, wherein heating
Temperature is 900 degrees Celsius to 1200 degrees Celsius, and the heating temperature used in the present embodiment is 1200 degree Celsius；
Step 5: the bar prepared post-processing: is subjected to pressure-sizing, rolling, extruding, quenching, surface hardening, immersion oil and infiltration.
Further, in the above scheme, it first needs to prepare metal cobalt powder and hard compounds powder in the raw material weighing
End, wherein using mechanical crushing method and couple corrosion method using the method for producing metal powder from solid metallic and alloy, then
To after producing metal cobalt powder and hard compounds powder screen, wherein by filter screen 500 microns of granularity arrive
1000 microns of metal cobalt powder and hard compounds powder, wherein hard compounds powder uses tungsten-carbide powder, carbonized titanium powder
End and tantalum carbide powder, the particle size average of metal cobalt powder and hard compounds powder in the present embodiment are 675 microns.
Further, in the above scheme, the plasticizer in the raw material mixing uses machine oil, rubber or paraffin, this reality
Applying the machine oil dosage in example is 20 kilograms.
Further, in the above scheme, respective shapes and size is made using extrusion forming process in the compression moulding
Green compact, and make it have certain density and intensity.
Further, in the above scheme, required by the green compact after the sinter molding obtains it by sintering most
Whole physical mechanical property, sintering use unary system sintering process, and sintering temperature is below metal cobalt powder and hard compounds powder is molten
Point, referring to data: the fusing point of metallic cobalt is 1493 degrees Celsius, and the fusing point of tungsten carbide is 2870 degrees Celsius, and the fusing point of titanium carbide is
3140 degrees Celsius, the fusing point of tantalum carbide is 3880 degrees Celsius.
The bar tensile strength that the present embodiment measures is 477MPa, and the tensile strength highest reference value of common bar is
380MPa, current standard unit of stress are MPa, 1MPa=10Kg/cm2.
The tensile strength that the above implementation process measures the bar of this programme production is all much higher than common bar.
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 (5)
1. a kind of processing method of 13% bar of cobalt, it is characterised in that: method includes the following steps:
Step 1: raw material preparation: weighing quantitative metal cobalt powder and hard compounds powder by accurate weighing apparatus respectively,
Wherein the mass ratio of metal cobalt powder and hard compounds powder is 13:87；
Step 2: raw material mixing: by weighed metal cobalt powder and hard compounds powder are put into blender in step 1
Stir chamber in adequately stirred, and plasticizer is added during stirring；
Step 3: compression moulding: the mixed material in step 2 is put into bar mold, and 15- is applied to it
The pressure of 600MPa makes material that required shape be presented；
Step 4: sintering: the semi-finished product bar shaped in step 3 is put into vacuum high temperature furnace and is heated, wherein heating
Temperature is 900 degrees Celsius to 1200 degrees Celsius；
Step 5: the bar prepared post-processing: is subjected to pressure-sizing, rolling, extruding, quenching, surface hardening, immersion oil and infiltration.
2. a kind of processing method of 13% bar of cobalt according to claim 1, it is characterised in that: first need to make in the raw material weighing
Standby metal cobalt powder and hard compounds powder, wherein using the method for metal powder is produced from solid metallic and alloy using mechanical
Comminuting method and couple corrosion method, then to after producing metal cobalt powder and hard compounds powder screen, wherein passing through
Filter screens 500 microns to 1000 microns of granularity of metal cobalt powder and hard compounds powder, and wherein hard compounds powder is adopted
With tungsten-carbide powder, titanium carbide powder and tantalum carbide powder.
3. a kind of processing method of 13% bar of cobalt according to claim 1, it is characterised in that: the plasticizer in the raw material mixing
Using machine oil, rubber or paraffin.
4. a kind of processing method of 13% bar of cobalt according to claim 1, it is characterised in that: the compression moulding using pressurization at
Type process, is made the green compact of respective shapes and size, and makes it have certain density and intensity.
5. a kind of processing method of 13% bar of cobalt according to claim 1, it is characterised in that: the green compact after the sinter molding is logical
Oversintering makes it obtain required final physical mechanical performance, and sintering uses unary system sintering process, and sintering temperature is below gold
Belong to cobalt powder and hard compounds melting point.
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