CN109351961A - A kind of 420L stainless steel material and preparation method thereof for cutterhead product - Google Patents
A kind of 420L stainless steel material and preparation method thereof for cutterhead product Download PDFInfo
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- CN109351961A CN109351961A CN201811386129.5A CN201811386129A CN109351961A CN 109351961 A CN109351961 A CN 109351961A CN 201811386129 A CN201811386129 A CN 201811386129A CN 109351961 A CN109351961 A CN 109351961A
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- stainless steel
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
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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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
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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
- 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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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
A kind of 420L stainless steel material and preparation method thereof for cutterhead product, it is related to stainless steel processing technique field.A kind of 420L stainless steel material for cutterhead product, is made of following raw material: 420 powder of stainless steel, carbon, lubricant.According to metering proportion, take above-mentioned raw materials that preparation can be completed according to a kind of 420L stainless steel material for cutterhead product and preparation method thereof processing.After by adopting the above technical scheme, the invention has the following beneficial effects: simple process, use value is high, various aspects of performance is excellent, after being fabricated to cutterhead product, product hardness and wearability performance are strong, with casting than at low cost 30%, it is high-quality, there is no necking slag inclusion, product plane degree is good, stability is good, meat effect improves 15-20% out, product surface roughness is high, wearability is more preferable, qualification rate is up to 99.9%, various structures can be done and go out meat hole, casting is less than 3mm, meet client's the tip of the tongue experience abundant, the cutterhead properties of product of production colleague field comparison in function admirable and generalization it is strong.
Description
Technical field
The present invention relates to stainless steel processing technique fields, and in particular to a kind of 420L stainless steel material for cutterhead product
And preparation method thereof.
Background technique
Stainless steel refers to the steel of the chemical etchings dielectric corrosions such as the weak corrosive medium such as resistance to air, steam, water and acid, alkali, salt,
Also known as stainless acid resistant steel.In practical application, often the steel by resistance to weak corrosive medium corrosion is known as stainless steel, and resistant to chemical media is rotten
The steel of erosion is known as acid resisting steel.Due to difference of the two in chemical component, not necessarily resistant to chemical media corrodes for the former, and the latter is then
Generally there is rustless property.The corrosion resistance of stainless steel depends on alloying element contained in steel.
Chromium nickel in China's stainless steel industry raw material in foreign countries is that supply exceed demand, and is the shape that supply falls short of demand in China
Condition；Stainless steel is then excess capacity, and supply exceed demand, and profit space fluctuation is frequent.With stainless steel industry compete continuous aggravation,
M&A integration and capital operation are increased between large-size stainless steel manufacturing enterprise, and domestic outstanding enterprises of producing stainless steel is more and more
Pay attention to the research to industry market, the especially further investigation to Business Development Environment and customer demand Long-term change trend.Just because of
In this way, the outstanding stainless steel brand in large quantities of country emerges rapidly, the outstanding figure being increasingly becoming in stainless steel industry.
420 material blanks are melted in intermediate frequency furnace, are cast to dedicated mold cavity forming, cooling, parting water dividing gap, burr of polishing, heat
Processing, shaping, plain grinding purged and packed.Problem scrappage is high, with the presence of certain proportion product invisible defect: shrinkage cavity, slag inclusion, process
It is more, it is at high cost.
Currently on the market for the 420L stainless steel material preparation process often complex process of cutterhead product, use value is not
Height, various aspects of performance existing defects, after being fabricated to cutterhead product, product hardness and wearability performance be not strong, and casting cost is high,
Quality is bad, there is necking slag inclusion, and product plane degree is bad, and stability is not strong, and meat effect is poor out, and product surface roughness is low, resistance to
Mill property is poor, and qualification rate is lower, it is difficult to which can do various structures goes out meat hole, it is difficult to meet client's the tip of the tongue experience abundant, production
Performance is lower in the comparison of colleague field and generalization is poor for cutterhead properties of product.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of 420L for cutterhead product not
Become rusty Steel material and preparation method thereof, and simple process, use value is high, and various aspects of performance is excellent, after being fabricated to cutterhead product, produces
Product hardness and wearability performance are strong, high-quality with casting than at low cost 30%, do not have necking slag inclusion, and product plane degree is good, stablizes
Property it is good, meat effect improves 15-20% out, and product surface roughness is high, and wearability is more preferable, and qualification rate is up to 99.9%, can do various
Structure goes out meat hole, and casting is less than 3mm, meets client's the tip of the tongue experience abundant, the cutterhead properties of product of production are in colleague field pair
The function admirable and generalization is strong than in.
To achieve the above object, the present invention is using following technical scheme:
A kind of 420L stainless steel material for cutterhead product, it is made of the raw material of following parts by weight: 420 powder of stainless steel
200-300 parts, 20-30 parts of carbon, 30-40 parts of lubricant.
Its preparation method comprises the steps of:
Step 1: carrying out screening process to 420 powder of stainless steel using screening machine, sufficiently screening obtains 420 powder of stainless steel；
Step 2: carry out pulverization process to carbon using pulverizer, be placed on grinding in grinder after crushing, when grinding a length of 1-
2H obtains the carbon dust that grinding mesh number is greater than 100 mesh；
Step 3: 420 powder of stainless steel are placed in mixing machine, and carbon dust is added and is sufficiently mixed, sequentially adds lubrication later
Agent carbon dust, when mixing a length of 0.4-0.6H, obtain mixture；
Step 4: taking out mixture, and it is placed on cutterhead product forming machine compression moulding, pressing pressure 8, pressed
Density value >=6.3 processedSemi-finished product cutterhead product；
It is sintered Step 5: semi-finished product cutterhead product is placed in meshbeltfurnace, forms density value >=6.5, hardness >=
25, during which continue to be filled with protective gas into meshbeltfurnace, obtains 420 material product of cutterhead high-carbon；
Step 6: carrying out plain grinding and cleaning to 420 material product of cutterhead high-carbon, packing processes are carried out later, wait factory.
The apparent density of 420 powder of stainless steel is 2.95 in the step 1, oxygen 2000ppm, mesh number 100
Mesh.
The pressed density value of semi-finished product cutterhead product is 6.4-6.55 in the step 4。
Sintering temperature is 1120 degrees Celsius in the step 5.
Protective gas is hydrogen and nitrogen gas body in the step 5.
The working principle of the invention: screening process is carried out to 420 powder of stainless steel using screening machine, sufficiently screening obtains
420 powder of stainless steel；Pulverization process is carried out to carbon using pulverizer, is placed on grinding in grinder after crushing, when grinding is a length of
1-2H obtains the carbon dust that grinding mesh number is greater than 100 mesh；420 powder of stainless steel are placed in mixing machine, and it is abundant that carbon dust is added
Mixing, sequentially adds lubricant carbon dust later, when mixing a length of 0.4-0.6H, obtain mixture；Mixture is taken out, and is placed on
Cutterhead product forming machine compression moulding, pressing pressure 8, obtain pressed density value >=6.3Semi-finished product knife
Disk product；Semi-finished product cutterhead product is placed in meshbeltfurnace and is sintered, density value >=6.5 are formed, hardness >=25, during which
Continue to be filled with protective gas into meshbeltfurnace, obtains 420 material product of cutterhead high-carbon；420 material product of cutterhead high-carbon is carried out
Plain grinding and cleaning carry out packing processes later, wait factory.
After adopting the above technical scheme, various aspects of performance is excellent the invention has the following beneficial effects: simple process, use value is high
Good, after being fabricated to cutterhead product, product hardness and wearability performance are strong, high-quality with casting than at low cost 30%, do not contract
Mouth slag inclusion, product plane degree is good, and stability is good, and meat effect improves 15-20% out, and product surface roughness is high, and wearability is more preferable,
Qualification rate is up to 99.9%, can do various structures and go out meat hole, and casting is less than 3mm, meets client's the tip of the tongue experience abundant, production
Cutterhead properties of product colleague field comparison in function admirable and generalization it is strong.
Specific embodiment
Embodiment 1
Present embodiment the technical solution adopted is that:
A kind of 420L stainless steel material for cutterhead product, it is made of the raw material of following parts by weight: 420 powder of stainless steel
200 parts, 20 parts of carbon, 30 parts of lubricant.
Its preparation method comprises the steps of:
Step 1: carrying out screening process to 420 powder of stainless steel using screening machine, sufficiently screening obtains 420 powder of stainless steel；
Step 2: carry out pulverization process to carbon using pulverizer, be placed on grinding in grinder after crushing, when grinding a length of 1-
2H obtains the carbon dust that grinding mesh number is greater than 100 mesh；
Step 3: being ground using grinder to carbon, the carbon dust that mesh number is greater than 100 mesh is obtained after being fully ground；
Step 4: taking out mixture, and it is placed on cutterhead product forming machine compression moulding, pressing pressure 8, pressed
Density value >=6.3 processedSemi-finished product cutterhead product；
It is sintered Step 5: semi-finished product cutterhead product is placed in meshbeltfurnace, forms density value >=6.5, hardness >=
25, during which continue to be filled with protective gas into meshbeltfurnace, obtains 420 material product of cutterhead high-carbon；
Step 6: carrying out plain grinding and cleaning to 420 material product of cutterhead high-carbon, packing processes are carried out later, wait factory.
Carbon has following special nature: heat-resisting quantity due to its special construction: the fusing point of carbon is 3850 ± 50 DEG C, boiling
Point is 4250 DEG C, though through superhigh temperature electric arc calcination, the loss very little of weight, thermal expansion coefficient also very little；Carbon intensity is with temperature
It improves and reinforces, at 2000 DEG C, carbon intensity is doubled；Conductive, thermal conductivity: the electric conductivity of carbon is higher than general nonmetallic ore by one
Hundred times.Thermal conductivity is more than the metal materials such as steel, iron, lead；Thermal coefficient is increased with temperature and is reduced, or even in high temperature
Under, carbon is at heat guard.Carbon can conduction be because each carbon atom and other carbon atoms only form 3 covalent bonds in carbon, each
Carbon atom retains 1 free electron still to transmit charge；Lubricity: the greasy property of carbon depends on the size of kish carbon piece, squama
Piece is bigger, and coefficient of friction is smaller, and greasy property is better；Chemical stability: carbon has good chemical stability at normal temperature, is resistant to
Sour, alkaline-resisting and organic solvent-resistant corrosion；Plasticity: the good toughness of carbon can be ground into very thin thin slice；Thermal shock resistance: carbon is normal
Temperature is lower to be able to take the acute variation of temperature and will not destroy when using, and when temperature jump, the volume change of carbon is little, will not produce
Raw crackle.
Carbon and its compound are varied, and carbon can also form alloy, most commonly carbon steel with iron；Carbon and clay mixing
The pencil-lead for writing and painting can be made, carbon can also be used as lubricant and pigment, as the moulding material of glass manufacture, use
In electrode and plating, electroforming, the brush of electric motor and the neutron degradation material in nuclear reactor；Coke can be used for burning
Roasting, drawing materials and Iron industry；Gem grade diamond can be used as jewellery, and industrial diamond stone is used to drill, cut and polish,
And the tool of processing stone and metal.
Embodiment 2
Difference of the present embodiment from embodiment 1 is that it is made of the raw material of following parts by weight:
420 250 parts of powder of stainless steel, 25 parts of carbon, 35 parts of lubricant.Other raw materials composition, preparation method with 1 phase of embodiment
Together.
Embodiment 3
Difference of the present embodiment from embodiment 1 is that it is made of the raw material of following parts by weight:
420 300 parts of powder of stainless steel, 30 parts of carbon, 40 parts of lubricant.Other raw materials composition, preparation method with 1 phase of embodiment
Together.
After adopting the above technical scheme, various aspects of performance is excellent the invention has the following beneficial effects: simple process, use value is high
Good, after being fabricated to cutterhead product, product hardness and wearability performance are strong, high-quality with casting than at low cost 30%, do not contract
Mouth slag inclusion, product plane degree is good, and stability is good, and meat effect improves 15-20% out, and product surface roughness is high, and wearability is more preferable,
Qualification rate is up to 99.9%, can do various structures and go out meat hole, and casting is less than 3mm, meets client's the tip of the tongue experience abundant, production
Cutterhead properties of product colleague field comparison in function admirable and generalization it is strong.
The above is only used to illustrate the technical scheme of the present invention and not to limit it, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (9)
1. kind be used for cutterhead product 420L stainless steel material, which is characterized in that it is made of the raw material of following parts by weight:
420 200-300 parts of powder of stainless steel, 30-40 parts of lubricant, 25-35 parts of carbon.
2. a kind of preparation method of the 420L stainless steel material for cutterhead product, which is characterized in that it is comprised the steps of:
Step 1: carrying out screening process to 420 powder of stainless steel using screening machine, sufficiently screening obtains 420 powder of stainless steel；
Step 2: carry out pulverization process to carbon using pulverizer, be placed on grinding in grinder after crushing, when grinding a length of 1-
2H obtains the carbon dust that grinding mesh number is greater than 100 mesh；
Step 3: 420 powder of stainless steel are placed in mixing machine, and carbon dust is added and is sufficiently mixed, sequentially adds lubrication later
Agent carbon dust, when mixing a length of 0.4-0.6H, obtain mixture；
Step 4: taking out mixture, and it is placed on cutterhead product forming machine compression moulding, pressing pressure 8, pressed
Density value >=6.3 processedSemi-finished product cutterhead product；
It is sintered Step 5: semi-finished product cutterhead product is placed in meshbeltfurnace, forms density value >=6.5, hardness >=25,
Period continues to be filled with protective gas into meshbeltfurnace, obtains 420 material product of cutterhead high-carbon；
Step 6: carrying out plain grinding and cleaning to 420 material product of cutterhead high-carbon, packing processes are carried out later, wait factory.
3. a kind of 420L stainless steel material for cutterhead product according to claim 1, which is characterized in that it is by following
The raw material of parts by weight forms: 420 200 parts of powder of stainless steel, 20 parts of carbon, 30 parts of lubricant.
4. a kind of 420L stainless steel material for cutterhead product according to claim 1, which is characterized in that it is by following
The raw material of parts by weight forms: 420 250 parts of powder of stainless steel, 25 parts of carbon, 35 parts of lubricant.
5. a kind of 420L stainless steel material for cutterhead product according to claim 1, which is characterized in that it is by following
The raw material of parts by weight forms: 420 300 parts of powder of stainless steel, 30 parts of carbon, 40 parts of lubricant.
6. a kind of preparation method of 420L stainless steel material for cutterhead product according to claim 2, feature exist
In: the apparent density of 420 powder of stainless steel is 2.95 in the step 1, oxygen 2000ppm, mesh number is 100 mesh.
7. a kind of preparation method of 420L stainless steel material for cutterhead product according to claim 2, feature exist
In: the pressed density value of semi-finished product cutterhead product is 6.4-6.55 in the step 5。
8. a kind of preparation method of 420L stainless steel material for cutterhead product according to claim 2, feature exist
In: sintering temperature is 1120 degrees Celsius in the step 6.
9. a kind of preparation method of 420L stainless steel material for cutterhead product according to claim 2, feature exist
In: protective gas is hydrogen and nitrogen gas body in the step 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386129.5A CN109351961A (en) | 2018-11-20 | 2018-11-20 | A kind of 420L stainless steel material and preparation method thereof for cutterhead product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386129.5A CN109351961A (en) | 2018-11-20 | 2018-11-20 | A kind of 420L stainless steel material and preparation method thereof for cutterhead product |
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| CN109351961A true CN109351961A (en) | 2019-02-19 |
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| CN201811386129.5A Pending CN109351961A (en) | 2018-11-20 | 2018-11-20 | A kind of 420L stainless steel material and preparation method thereof for cutterhead product |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000016934A1 (en) * | 1998-09-18 | 2000-03-30 | Höganäs Ab | Warm compaction of steel powders |
| CN101597712A (en) * | 2009-07-01 | 2009-12-09 | 广州有色金属研究院 | A kind of preparation method of stainless steel powder metallurgy material |
| CN105177397A (en) * | 2015-10-08 | 2015-12-23 | 东睦新材料集团股份有限公司 | Preparation method for powder metallurgy wear-resisting stainless steel |
| CN105695845A (en) * | 2016-02-18 | 2016-06-22 | 南昌大学 | Preparation process of heat dissipation and abrasion resistance material |
-
2018
- 2018-11-20 CN CN201811386129.5A patent/CN109351961A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000016934A1 (en) * | 1998-09-18 | 2000-03-30 | Höganäs Ab | Warm compaction of steel powders |
| CN101597712A (en) * | 2009-07-01 | 2009-12-09 | 广州有色金属研究院 | A kind of preparation method of stainless steel powder metallurgy material |
| CN105177397A (en) * | 2015-10-08 | 2015-12-23 | 东睦新材料集团股份有限公司 | Preparation method for powder metallurgy wear-resisting stainless steel |
| CN105695845A (en) * | 2016-02-18 | 2016-06-22 | 南昌大学 | Preparation process of heat dissipation and abrasion resistance material |
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Application publication date: 20190219 |
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