CN108588539A - A kind of corrosion resisting stainless steel precise forming technique - Google Patents
A kind of corrosion resisting stainless steel precise forming technique Download PDFInfo
- Publication number
- CN108588539A CN108588539A CN201810026043.5A CN201810026043A CN108588539A CN 108588539 A CN108588539 A CN 108588539A CN 201810026043 A CN201810026043 A CN 201810026043A CN 108588539 A CN108588539 A CN 108588539A
- Authority
- CN
- China
- Prior art keywords
- powder
- stainless steel
- forming technique
- corrosion resisting
- precise forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0292—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with more than 5% preformed carbides, nitrides or borides
-
- 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
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/049—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by pulverising at particular temperature
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to a kind of corrosion resisting stainless steel precise forming techniques, including furnace body to pre-process, and ball milling processes hard substrate, four step such as steel based alloy batch mixing ball milling and compression moulding.The present invention is compared with prior art, on the one hand the effective working efficiency for improving corrosion-resistant stainless steel operations for forming, operations for forming energy consumption and material loss are reduced, on the other hand effective structural strength, high temperature resistant, fracture toughness, corrosion resistance, the ability of abrasion resistance for improving corrosion-resistant stainless steel.
Description
Technical field
The present invention relates to a kind of corrosion resisting stainless steel precise forming techniques, belong to casting processing technique field.
Background technology
At present in the industry fields such as food, chemical industry, ship, corrosion-resistant stainless steel and the parts based on corrosion resisting steel make
Dosage is huge, but finds in actual use, and currently used corrosion-resistant stainless steel is often to be closed based on iron-based and hard
Golden material mixed sintering melting forms, and currently when carrying out this kind of corrosion-resistant stainless steel processing operation, is mainly closed by hard
Mutual ball milling merges under normal temperature state between gold particle and iron-based grains, then by bonding agent etc. be bonded and external high
Preliminary moulding operation is carried out under pressure ring border, high temperature sintering is being carried out after completion is moulding, although this process can meet
The needs of operation are processed to corrosion-resistant stainless steel, but process work operations flow very complicated, and production efficiency is relatively low and raw
Production capacity consumption is relatively high, therefore causes the yield of current corrosion-resistant stainless steel relatively low, and cost is higher, cannot effectively meet to resistance to
The needs that corrosion stainless steel uses, therefore it is directed to this problem, there is an urgent need to develop a kind of completely new corrosion-resistant stainless steel moldings
Technique, to meet the needs that actual production uses.
Invention content
The object of the invention, which is that, overcomes above-mentioned deficiency, provides a kind of corrosion resisting stainless steel precise forming technique.
To achieve the above object, the present invention is to be achieved through the following technical solutions：
A kind of corrosion-resisting steel precise forming technique, includes the following steps：
Air in smelting furnace is discharged by argon gas, then seals smelting furnace and make to melt by the first step, furnace body pretreatment first
Then air pressure constant in furnace rises to smelting furnace internal temperature in 3-10 minutes in 1.1-3 standard atmospheric pressures
It 350 DEG C -1200 DEG C and keeps the temperature；
Second step, ball milling process hard substrate, after completing first step operation, by the argon gas that pressure is 2-3.5 standard atmospheric pressures
Tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder, manganese powder are passed into smelting furnace in proportion respectively, then according to ball material
Than 10-40：1 ratio carries out at the uniform velocity mixing and spheroidal graphite operation, and the wherein spheroidal graphite activity duration is 12-72 hours, spheroidal graphite operation
When melting in-furnace temperature it is constant at 800 DEG C -1200 DEG C；
Third walk, steel based alloy batch mixing ball milling, complete second step after, by tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder,
The iron alloy powder of 1.5-5 times of manganese powder total amount is delivered to by the argon gas that pressure is 2-3.5 standard atmospheric pressures in smelting furnace, so
Afterwards according to ratio of grinding media to material 4-15：1 ratio carries out at the uniform velocity mixing and spheroidal graphite operation, and the wherein spheroidal graphite activity duration is 12-72 hours,
Melting in-furnace temperature is constant at 800 DEG C -1200 DEG C when spheroidal graphite operation；
4th step, compression moulding, after completing third step so that mixture prepared by third step is with 20 DEG C -60 DEG C/min speed
It cools to 20 DEG C-80 DEG C, and keeps the temperature 5-10 minutes, then total amount of adding is mixed material total amount into mixed material
1.1-2.5 times of bonding agent, and bonding agent is made to be stirred evenly with mixed material, it will under then being acted on by 300-700MPa pressure
Mixed material compression moulding in molding die, and pressurize 1-5 hours, then will be in mixed material depth in 3-10 minutes
It is raised to 1400 DEG C-1500 DEG C and is sintered molding, the wherein sinter molding time is 1-10 minutes, then naturally cools to room temperature
It can be obtained finished work-piece.
Further, the tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder, manganese powder particle diameter be 50 μ
m—350μm。
Further, each raw material in the particle of the tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder, manganese powder
Usage amount is tungsten powder 10% -21%, ramet 5% -25%, titanium valve 3% -15%, boron carbide powder 1% -3%, manganese powder 3% -16%, remaining
Amount is graphite powder.
Further, in third step operation process, iron alloy powder is manganeisen, Antaciron, iron-nickel alloy
And any one in ferro-titanium.
Further, in the described third step operation process, carry out iron alloy powder addition after the completion of, again by pressure
Power is that rare earth powder is delivered in smelting furnace by the argon gas of 2-3.5 standard atmospheric pressures, and rare earth powder total amount is iron alloy powder total amount
10%—15%。
Further, the rare earth is the lanthanide series for including the elements such as Ce, H, Dy, Sm, Gd and Lu.
Further, in the 4th step, when being sintered operation, keep 300-700MPa pressure environments constant
It is constant.
Compared with prior art, the present invention the working efficiency of corrosion-resistant stainless steel operations for forming is on the one hand effectively improved,
Operations for forming energy consumption and material loss are reduced, on the other hand the effective structural strength, high temperature resistant, knot for improving corrosion-resistant stainless steel
Structure toughness, corrosion resistance, the ability of abrasion resistance.
Description of the drawings
Fig. 1 is the precise forming process flow chart of the present invention.
Specific implementation mode
Embodiment 1
A kind of corrosion resisting stainless steel precise forming technique as shown in Figure 1, includes the following steps：
Air in smelting furnace is discharged by argon gas, then seals smelting furnace and make to melt by the first step, furnace body pretreatment first
Then smelting furnace internal temperature is risen to 450 DEG C in 6 minutes and protected by the air pressure constant in furnace in 2 standard atmospheric pressures
Temperature；
Second step, ball milling process hard substrate, after completing first step operation, are distinguished by the argon gas that pressure is 3 standard atmospheric pressures
Tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder, manganese powder are passed into smelting furnace in proportion, then according to ratio of grinding media to material 35：
1 ratio carries out at the uniform velocity mixing and spheroidal graphite operation, and the wherein spheroidal graphite activity duration is 12 hours, melting in-furnace temperature when spheroidal graphite operation
It is constant at 600 DEG C；
Third walk, steel based alloy batch mixing ball milling, complete second step after, by tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder,
The iron alloy powder that 5 times of manganese powder total amount is delivered to by the argon gas that pressure is 3.5 standard atmospheric pressures in smelting furnace, then according to ball
Expect ratio 10：1 ratio carries out at the uniform velocity mixing and spheroidal graphite operation, and the wherein spheroidal graphite activity duration is 72 hours, melting when spheroidal graphite operation
In-furnace temperature is constant at 1150 DEG C；
4th step, compression moulding, after completing third step so that mixture prepared by third step is with 50 DEG C/min of speed cooling drops
Temperature keeps the temperature 9 minutes to 50 DEG C, and then into mixed material, total amount of adding is the bonding agent of 1.1 times of mixed material total amount, and makes
Bonding agent is stirred evenly with mixed material, is pressed into mixed material in molding die under then being acted on by 700MPa pressure
Type, and pressurize 3 hours, then rise to 1480 DEG C by mixed material depth in 10 minutes and are sintered molding, wherein being sintered
Molding time is 10 minutes, then naturally cools to room temperature and can be obtained finished work-piece.
In the present embodiment, the tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder, manganese powder particle diameter be 50 μ
m—350μm。
In the present embodiment, the tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder, manganese powder particle in each raw material
Usage amount be that tungsten powder 20%, ramet 20%, titanium valve 10%, boron carbide powder 2%, manganese powder 15%, surplus is graphite powder.
In the present embodiment, the third walks in operation process, and iron alloy powder is manganeisen, Antaciron, the conjunction of iron nickel
Gold and ferro-titanium in any one.
In the present embodiment, the third walk operation process in, carry out iron alloy powder addition after the completion of, again by
Pressure is that rare earth powder is delivered in smelting furnace by the argon gas of 2 standard atmospheric pressures, and rare earth powder total amount is iron alloy powder total amount
15%。
In the present embodiment, the rare earth is the lanthanide series for including the elements such as Ce, H, Dy, Sm, Gd and Lu.
In the present embodiment, in the 4th step, when being sintered operation, keep 700MPa pressure environments constant not
Become.
Embodiment 2
A kind of corrosion resisting stainless steel precise forming technique as shown in Figure 1, includes the following steps：
Air in smelting furnace is discharged by argon gas, then seals smelting furnace and make to melt by the first step, furnace body pretreatment first
Then smelting furnace internal temperature is risen to 500 DEG C simultaneously by the air pressure constant in furnace in 5 minutes in 1.5 standard atmospheric pressures
Heat preservation；
Second step, ball milling process hard substrate, after completing first step operation, by the argon gas point that pressure is 3.5 standard atmospheric pressures
Tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder, manganese powder are not passed into smelting furnace in proportion, then according to ratio of grinding media to material
30：1 ratio carries out at the uniform velocity mixing and spheroidal graphite operation, and the wherein spheroidal graphite activity duration is 24 hours, when spheroidal graphite operation in smelting furnace
Temperature is constant at 750 DEG C；
Third walk, steel based alloy batch mixing ball milling, complete second step after, by tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder,
The iron alloy powder that 3.5 times of manganese powder total amount by pressure be 3.5 standard atmospheric pressures argon gas be delivered in smelting furnace, then according to
Ratio of grinding media to material 7：1 ratio carries out at the uniform velocity mixing and spheroidal graphite operation, and the wherein spheroidal graphite activity duration is 35 hours, melting when spheroidal graphite operation
In-furnace temperature is constant at 1000 DEG C；
4th step, compression moulding, after completing third step so that mixture prepared by third step is with 50 DEG C/min of speed cooling drops
Temperature keeps the temperature 7 minutes to 50 DEG C, and then into mixed material, total amount of adding is the bonding agent of 1.5 times of mixed material total amount, and makes
Bonding agent is stirred evenly with mixed material, is pressed into mixed material in molding die under then being acted on by 550MPa pressure
Type, and pressurize 4 hours, then rise to 1450 DEG C by mixed material depth in 8 minutes and are sintered molding, wherein sintering into
The type time is 6 minutes, then naturally cools to room temperature and can be obtained finished work-piece.
In the present embodiment, the tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder, manganese powder particle diameter be 50 μ
m—350μm。
In the present embodiment, the tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder, manganese powder particle in each raw material
Usage amount be that tungsten powder 21%, ramet 15%, titanium valve 8%, boron carbide powder 2.5%, manganese powder 6%, surplus is graphite powder.
In the present embodiment, the third walks in operation process, and iron alloy powder is manganeisen, Antaciron, the conjunction of iron nickel
Gold and ferro-titanium in any one.
In the present embodiment, the third walk operation process in, carry out iron alloy powder addition after the completion of, again by
Pressure is that rare earth powder is delivered in smelting furnace by the argon gas of 3.5 standard atmospheric pressures, and rare earth powder total amount is iron alloy powder total amount
11%。
In the present embodiment, the rare earth is the lanthanide series for including the elements such as Ce, H, Dy, Sm, Gd and Lu.
In the present embodiment, in the 4th step, when being sintered operation, keep 550MPa pressure environments constant not
Become.
Compared with prior art, the present invention the working efficiency of corrosion-resistant stainless steel operations for forming is on the one hand effectively improved,
Operations for forming energy consumption and material loss are reduced, on the other hand the effective structural strength, high temperature resistant, knot for improving corrosion-resistant stainless steel
Structure toughness, corrosion resistance, the ability of abrasion resistance.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. a kind of corrosion resisting stainless steel precise forming technique, it is characterised in that：The corrosion resisting stainless steel precise forming technique includes
Following steps：
Air in smelting furnace is discharged by argon gas, then seals smelting furnace and make to melt by the first step, furnace body pretreatment first
Then air pressure constant in furnace rises to smelting furnace internal temperature in 3-10 minutes in 1.1-3 standard atmospheric pressures
It 350 DEG C -1200 DEG C and keeps the temperature；
Second step, ball milling process hard substrate, after completing first step operation, by the argon gas that pressure is 2-3.5 standard atmospheric pressures
Tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder, manganese powder are passed into smelting furnace in proportion respectively, then according to ball material
Than 10-40：1 ratio carries out at the uniform velocity mixing and spheroidal graphite operation, and the wherein spheroidal graphite activity duration is 12-72 hours, spheroidal graphite operation
When melting in-furnace temperature it is constant at 800 DEG C -1200 DEG C；
Third walk, steel based alloy batch mixing ball milling, complete second step after, by tungsten powder, ramet, titanium valve, graphite powder, boron carbide powder,
The iron alloy powder of 1.5-5 times of manganese powder total amount is delivered to by the argon gas that pressure is 2-3.5 standard atmospheric pressures in smelting furnace, so
Afterwards according to ratio of grinding media to material 4-15：1 ratio carries out at the uniform velocity mixing and spheroidal graphite operation, and the wherein spheroidal graphite activity duration is 12-72 hours,
Melting in-furnace temperature is constant at 800 DEG C -1200 DEG C when spheroidal graphite operation；
4th step, compression moulding, after completing third step so that mixture prepared by third step is with 20 DEG C -60 DEG C/min speed
It cools to 20 DEG C-80 DEG C, and keeps the temperature 5-10 minutes, then total amount of adding is mixed material total amount into mixed material
1.1-2.5 times of bonding agent, and bonding agent is made to be stirred evenly with mixed material, it will under then being acted on by 300-700MPa pressure
Mixed material compression moulding in molding die, and pressurize 1-5 hours, then will be in mixed material depth in 3-10 minutes
It is raised to 1400 DEG C-1500 DEG C and is sintered molding, the wherein sinter molding time is 1-10 minutes, then naturally cools to room temperature
It can be obtained finished work-piece.
2. a kind of corrosion resisting stainless steel precise forming technique according to claim 1, it is characterised in that：The tungsten powder, carbon
Change tantalum, titanium valve, graphite powder, boron carbide powder, manganese powder particle diameter be 50 μm -350 μm.
3. a kind of corrosion resisting stainless steel precise forming technique according to claim 1, it is characterised in that：The tungsten powder, carbon
The usage amount for changing each raw material in the particle of tantalum, titanium valve, graphite powder, boron carbide powder, manganese powder is tungsten powder 10% -21%, ramet
5% -25%, titanium valve 3% -15%, boron carbide powder 1% -3%, manganese powder 3% -16%, surplus are graphite powder.
4. a kind of corrosion resisting stainless steel precise forming technique according to claim 1, it is characterised in that：The third step is made
During industry, iron alloy powder is any one in manganeisen, Antaciron, iron-nickel alloy and ferro-titanium.
5. a kind of corrosion resisting stainless steel precise forming technique according to claim 1, it is characterised in that：The third step is made
During industry, carry out iron alloy powder addition after the completion of, will again by the argon gas that pressure is 2-3.5 standard atmospheric pressures
Rare earth powder is delivered in smelting furnace, and rare earth powder total amount is 10%-the 15% of iron alloy powder total amount.
6. a kind of corrosion resisting stainless steel precise forming technique according to claim 5, it is characterised in that：The rare earth is packet
Lanthanide series containing Ce, H, Dy, Sm, Gd and Lu element.
7. a kind of corrosion resisting stainless steel precise forming technique according to claim 1, it is characterised in that：4th step
In, when being sintered operation, keep 300-700MPa pressure environments invariable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026043.5A CN108588539A (en) | 2018-01-11 | 2018-01-11 | A kind of corrosion resisting stainless steel precise forming technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026043.5A CN108588539A (en) | 2018-01-11 | 2018-01-11 | A kind of corrosion resisting stainless steel precise forming technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108588539A true CN108588539A (en) | 2018-09-28 |
Family
ID=63608210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810026043.5A Pending CN108588539A (en) | 2018-01-11 | 2018-01-11 | A kind of corrosion resisting stainless steel precise forming technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108588539A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114232A (en) * | 2013-03-21 | 2013-05-22 | 湖南省冶金材料研究所 | Rare-earth modified steel-bonded hard alloy and preparation method |
| CN104294073A (en) * | 2014-09-23 | 2015-01-21 | 江苏汇诚机械制造有限公司 | Preparation method of modified high-manganese steel base TiC steel bonded carbide |
| CN104294074A (en) * | 2014-09-24 | 2015-01-21 | 江苏汇诚机械制造有限公司 | Preparation method of medium manganese steel base TiC steel bonded carbide |
| CN104328322A (en) * | 2014-11-28 | 2015-02-04 | 株洲硬质合金集团有限公司 | Heat-resistant steel structure hard alloy and preparation method thereof |
| CN104911429A (en) * | 2015-06-15 | 2015-09-16 | 河源正信硬质合金有限公司 | Corrosion-resistant steel bond hard alloy and preparation method thereof |
| KR101560485B1 (en) * | 2014-06-23 | 2015-10-14 | 송정수 | Manufacturing method of hard metal composition for precious metal |
| CN105441775A (en) * | 2014-08-23 | 2016-03-30 | 江苏汇诚机械制造有限公司 | Preparation method of (TiV)C steel bond hard alloy |
-
2018
- 2018-01-11 CN CN201810026043.5A patent/CN108588539A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114232A (en) * | 2013-03-21 | 2013-05-22 | 湖南省冶金材料研究所 | Rare-earth modified steel-bonded hard alloy and preparation method |
| KR101560485B1 (en) * | 2014-06-23 | 2015-10-14 | 송정수 | Manufacturing method of hard metal composition for precious metal |
| CN105441775A (en) * | 2014-08-23 | 2016-03-30 | 江苏汇诚机械制造有限公司 | Preparation method of (TiV)C steel bond hard alloy |
| CN104294073A (en) * | 2014-09-23 | 2015-01-21 | 江苏汇诚机械制造有限公司 | Preparation method of modified high-manganese steel base TiC steel bonded carbide |
| CN104294074A (en) * | 2014-09-24 | 2015-01-21 | 江苏汇诚机械制造有限公司 | Preparation method of medium manganese steel base TiC steel bonded carbide |
| CN104328322A (en) * | 2014-11-28 | 2015-02-04 | 株洲硬质合金集团有限公司 | Heat-resistant steel structure hard alloy and preparation method thereof |
| CN104911429A (en) * | 2015-06-15 | 2015-09-16 | 河源正信硬质合金有限公司 | Corrosion-resistant steel bond hard alloy and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109014192A (en) | Optimize particle size ceramic enhancing metal-base composites and its preparation method and application | |
| CN105950940B (en) | A kind of nickel plating cubic boron nitride material and preparation method thereof | |
| CN102965590B (en) | A kind of brazing and preparation thereof | |
| CN107012347B (en) | A kind of high-entropy alloy sintered diamond locking nub | |
| CN106636834B (en) | Inhibit the method and ultra-fine cemented carbide preparation process that hard alloy crystal grain is grown up | |
| CN107973606A (en) | Polycrystalline cubic boron nitride, preparation method and applications, the cutter comprising the polycrystalline cubic boron nitride | |
| CN108842106B (en) | Gauge protection ring and preparation method and application thereof | |
| CN107838417B (en) | A kind of iron Al-based agent diamond tool and preparation method thereof | |
| CN107119207A (en) | It is a kind of non-metering than TiC enhancing Cu-base composites and preparation method thereof | |
| CN104451324B (en) | Preparation process of WCoB-based metal ceramic | |
| CN106976023A (en) | A kind of method of sensing heating high-entropy alloy Furnace Brazing of Diamond Grinding Wheel With Ni | |
| CN104400672A (en) | Metallic bond diamond grinding wheel | |
| CN111560564A (en) | Resource-saving high-nitrogen duplex stainless steel and near-net forming method thereof | |
| CN102974818A (en) | Formula and manufacturing method for special diamond tool bit | |
| CN101210291B (en) | Method for producing ultra-fine crystal particle cermet | |
| CN106834872A (en) | A kind of preparation method of tough high-wear resistant Ti N steel bonded carbide high | |
| CN105369110B (en) | A kind of preparation method of the heat-resisting steel bonded carbide of TiC | |
| CN103243252A (en) | Binder-phase wolfram-carbide (WC) hard alloy and preparation method thereof | |
| CN105039763A (en) | Powder metallurgical preparing method of titanium-based composite cutter material | |
| CN108588539A (en) | A kind of corrosion resisting stainless steel precise forming technique | |
| CN104120361B (en) | A kind of composite powder metallurgy material and preparation method thereof | |
| CN110241348A (en) | A kind of non-magnetic metal ceramic and its preparation method and application | |
| CN105131904B (en) | A kind of magnetic abrasive and preparation method thereof | |
| CN109518062A (en) | A kind of high-strength high abrasion multi-principal high-entropy alloy cutter and preparation method thereof | |
| CN102747249B (en) | Enhanced titanium-based composite material and powder metallurgy preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180928 |
|
| RJ01 | Rejection of invention patent application after publication |