CN110241415B - Method for manufacturing roller head of rock wool fiber forming high-speed centrifugal machine - Google Patents
Method for manufacturing roller head of rock wool fiber forming high-speed centrifugal machine Download PDFInfo
- Publication number
- CN110241415B CN110241415B CN201910559179.7A CN201910559179A CN110241415B CN 110241415 B CN110241415 B CN 110241415B CN 201910559179 A CN201910559179 A CN 201910559179A CN 110241415 B CN110241415 B CN 110241415B
- Authority
- CN
- China
- Prior art keywords
- cladding
- roller head
- rock wool
- wool fiber
- speed centrifuge
- 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.)
- Active
Links
- 239000011490 mineral wool Substances 0.000 title claims abstract description 30
- 239000000835 fiber Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000005253 cladding Methods 0.000 claims abstract description 85
- 239000000463 material Substances 0.000 claims abstract description 41
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 9
- 238000004372 laser cladding Methods 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 abstract description 11
- 230000007797 corrosion Effects 0.000 abstract description 11
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides a method for manufacturing a roller head of a rock wool fiber forming high-speed centrifugal machine, which comprises the following steps: step A: preparing a cladding material, wherein the cladding material comprises the following components in percentage by mass: 45% -60%, Cr: 15% -25%, Mo: 2-4%, Nb 4-6%, Ti 0.5-1.5%, Al: less than or equal to 1 percent, less than or equal to 1 percent of Co, less than or equal to 0.4 percent of Si, less than or equal to 0.1 percent of C, and the balance of Fe; the cladding material is powder, and the particle size is 100-300 meshes; and B: the base material of the high-speed centrifuge roller head is made of low-carbon steel; and C: and laser cladding the cladding material on the base material of the high-speed centrifuge roller head made of low-carbon steel. The roller head of the high-speed centrifugal machine for rock wool fiber formation greatly improves the high-temperature resistance, corrosion resistance and wear resistance of the roller head, and prolongs the service life.
Description
Technical Field
The invention relates to the field of rock wool fiber forming, in particular to a method for manufacturing a roller head of a high-speed centrifugal machine for rock wool fiber forming.
Background
The rock wool is made up by using basalt and other natural ore as main raw material through the processes of high-temp. melting and forming fibre. The key equipment for forming rock wool is a high-speed centrifuge, the roller head of the high-speed centrifuge centrifuges liquid rock into fibers at high speed under the condition that the rock is molten, and the rotating speed of the roller head of the high-speed centrifuge reaches more than 6000 revolutions per minute. Therefore, the roll head of the high-speed centrifuge needs to be resistant to high temperature and corrosion. The roller head of the existing rock wool fiber-forming high-speed centrifugal machine is made of stainless steel through overlaying welding on a base material made of heat-resistant steel so as to improve corrosion resistance and heat resistance, but the roller head of the existing rock wool fiber-forming high-speed centrifugal machine is still poor in corrosion resistance and heat resistance, short in online service life, generally 75-80 hours, high in replacement frequency and capable of influencing production.
In summary, the following problems exist in the prior art: the roller head of the existing rock wool fiber-forming high-speed centrifugal machine has short service life on line.
Disclosure of Invention
The invention provides a method for manufacturing a roller head of a rock wool fiber forming high-speed centrifugal machine, which aims to solve the problem that the roller head of the existing rock wool fiber forming high-speed centrifugal machine is short in online service life.
Therefore, the invention provides a method for manufacturing a roller head of a rock wool fiber forming high-speed centrifuge, which comprises the following steps:
step A: preparing a cladding material, wherein the cladding material comprises the following components in percentage by mass: 45% -60%, Cr: 15% -25%, Mo: 2-4%, Nb 4-6%, Ti 0.5-1.5%, Al: less than or equal to 1 percent, less than or equal to 1 percent of Co, less than or equal to 0.4 percent of Si, less than or equal to 0.1 percent of C, and the balance of Fe; the cladding material is powder, and the particle size is 100-300 meshes;
and B: the base material of the high-speed centrifuge roller head is made of low-carbon steel;
and C: and laser cladding the cladding material on the base material of the high-speed centrifuge roller head made of low-carbon steel.
Further, in the step C, a gas laser is adopted for cladding, the cladding power 2800 and 3500W, and the cladding thickness is 2mm to 4 mm.
Further, in the step C, a gas laser is adopted for cladding, the cladding power is 3000 and 3300W, and the cladding thickness is 3 mm.
Further, in the step C, a gas laser is adopted for cladding, the cladding power is 3400W, and the cladding thickness is 4 mm.
Further, a gravity powder feeder is adopted to feed the cladding material above the base material of the roller head of the high-speed centrifuge.
And further, the step C is realized by two times of cladding, the first cladding thickness is 1-2mm, and the second cladding thickness is 1-2mm after the first cladding.
Further, 35# steel or 45# steel is used for manufacturing the base material of the roller head of the rock wool fiber-forming high-speed centrifuge.
The invention has the beneficial effects that: the high-temperature-resistant, wear-resistant and corrosion-resistant alloy material is cladded on the surface of the roller head of the rock wool fiber-forming high-speed centrifuge, so that the high-temperature-resistant, corrosion-resistant and wear-resistant performances of the roller head of the rock wool fiber-forming high-speed centrifuge are greatly improved, the service life is prolonged, and the service life can be prolonged by 2 to 3 times and reaches 160 to 240 hours. Because the alloy coating is cladded on the surface of the roller head of the high-speed centrifugal machine for forming the rock wool fiber, the requirement of the base material of the roller head of the high-speed centrifugal machine for forming the rock wool fiber on the heat resistance is reduced, the base material is not made of heat-resistant steel and can be made of common low-carbon steel with lower price, and thus, the cost is reduced.
Furthermore, the invention can obtain thicker cladding thickness, and can be realized by two times of cladding, wherein the first cladding thickness is 1-2mm, and the second cladding thickness is 1-2mm after the first cladding. Through metallographic structure analysis, the cladding material adopted by the invention can still achieve a uniform cladding layer after cladding for 2 to 3 times, and meets the requirements of heat resistance, corrosion resistance and wear resistance. The cladding thickness of the gas laser is below 2mm each time, the cladding thickness can be overlapped for 2 to 3 times, and the larger cladding thickness can be obtained.
Detailed Description
The present invention will now be described in order to more clearly understand the technical features, objects, and effects of the present invention.
The invention provides a method for manufacturing a roller head of a rock wool fiber forming high-speed centrifugal machine, which comprises the following steps:
step A: preparing a cladding material, wherein the cladding material comprises the following components in percentage by mass: 45% -60%, Cr: 15% -25%, Mo: 2-4%, Nb 4-6%, Ti 0.5-1.5%, Al: less than or equal to 1 percent, less than or equal to 1 percent of Co, less than or equal to 0.4 percent of Si, less than or equal to 0.1 percent of C, and the balance of Fe; the cladding material is powder, and the particle size is 100-300 meshes; the cladding material can be prepared from related powder purchased in the market or directly customized from manufacturers;
and B: the base material of the high-speed centrifuge roller head is made of low-carbon steel;
and C: and laser cladding the cladding material on the base material of the high-speed centrifuge roller head made of low-carbon steel.
The high-temperature-resistant, wear-resistant and corrosion-resistant alloy material is cladded on the surface of the roller head of the rock wool fiber-forming high-speed centrifuge, so that the high-temperature-resistant, corrosion-resistant and wear-resistant performances of the roller head of the rock wool fiber-forming high-speed centrifuge are greatly improved, and the service life is prolonged. Because the alloy coating is cladded on the surface of the roller head of the high-speed centrifugal machine for forming the rock wool fiber, the requirement of the base material of the roller head of the high-speed centrifugal machine for forming the rock wool fiber on the heat resistance is reduced, the base material is not made of heat-resistant steel and can be made of common low-carbon steel with lower price, and thus, the cost is reduced.
Further, in the step C, a gas laser is adopted for cladding, the cladding power 2800 and 3500W, and the cladding thickness is 2mm to 4 mm. The condenser lens f is 3mm 1mm, or f is 4mm 2mm, or f is 6mm 3mm, or f is 10mm 1 mm. The cladding scan speed is 200 mm/min to 800 mm/min, for example 300 mm/min, 400 mm/min, the overlap ratio is 35%, 40% or 45%. After laser cladding, grinding is adopted to achieve the required surface quality and size. By adopting the parameters, a stable and reliable laser cladding layer can be obtained.
Further, in the step C, a gas laser is adopted for cladding, the cladding power is 3000 and 3300W, and the cladding thickness is 3 mm. Therefore, the power is low, and the cladding thickness is thick.
Further, in the step C, a gas laser is adopted for cladding, the cladding power is 3400W, the power is low, the cladding thickness is 4mm, and the cladding thickness is larger.
Further, a gravity powder feeder is adopted to feed the cladding material above the base material of the roller head of the high-speed centrifuge. In this way, the escape and loss of powder is reduced.
And further, the step C is realized by two times of cladding, the first cladding thickness is 1-2mm, the second cladding is carried out after the first cladding, and the second cladding thickness is 1-2mm on the basis of forming the cladding layer by the first cladding. The second cladding or scan may be in the same direction and process as the first cladding. Through metallographic structure analysis, the cladding material adopted by the invention can still achieve a uniform cladding layer after cladding for 2 to 3 times, and meets the requirements of heat resistance, corrosion resistance and wear resistance. The cladding thickness of the gas laser is below 2mm each time, the cladding thickness can be overlapped for 2 to 3 times, the larger cladding thickness can be obtained, and the corrosion resistance and the heat resistance of the product are improved.
Further, the base material of the high-speed centrifuge roller head is made of 35# steel or 45# steel, so that the cost is low, and the performance of the high-speed centrifuge roller head can be ensured.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. In order that the components of the present invention may be combined without conflict, it is intended that all equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. A manufacturing method of a roller head of a rock wool fiber forming high-speed centrifuge is characterized by comprising the following steps:
step A: preparing a cladding material, wherein the cladding material comprises the following components in percentage by mass: 45% -60%, Cr: 15% -25%, Mo: 2-4%, Nb 4-6%, Ti 0.5-1.5%, Al: less than or equal to 1 percent, less than or equal to 1 percent of Co, less than or equal to 0.4 percent of Si, less than or equal to 0.1 percent of C, and the balance of Fe; the cladding material is powder, and the particle size is 100-300 meshes;
and B: the base material of the high-speed centrifuge roller head is made of low-carbon steel;
and C: and laser cladding the cladding material on the base material of the high-speed centrifuge roller head made of low-carbon steel.
2. The method for manufacturing the roller head of the rock wool fiber forming high-speed centrifuge as claimed in claim 1, wherein in the step C, a gas laser is adopted for cladding, the cladding power is 2800 and 3500W, and the cladding thickness is 2mm to 4 mm.
3. The method for manufacturing the roller head of the rock wool fiber forming high-speed centrifuge as claimed in claim 1, wherein in the step C, a gas laser is adopted for cladding, the cladding power is 3000 and 3300W, and the cladding thickness is 3 mm.
4. The method for manufacturing the roller head of the rock wool fiber forming high-speed centrifuge as claimed in claim 1, wherein in the step C, a gas laser is adopted for cladding, the cladding power is 3400W, and the cladding thickness is 4 mm.
5. The method of claim 1, wherein a gravity powder feeder is used to feed cladding material above the base material of the high speed centrifuge roller head.
6. The method for manufacturing the roller head of the rock wool fiber forming high-speed centrifuge as claimed in claim 1, wherein the step C is realized by cladding twice, the first cladding thickness is 1-2mm, and after the first cladding, cladding is carried out for the second time, and the second cladding thickness is 1-2 mm.
7. The method of claim 1, wherein the base material of the roller head of the high-speed centrifugal machine for fiber-forming rock wool is 35# steel or 45# steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910559179.7A CN110241415B (en) | 2019-06-26 | 2019-06-26 | Method for manufacturing roller head of rock wool fiber forming high-speed centrifugal machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910559179.7A CN110241415B (en) | 2019-06-26 | 2019-06-26 | Method for manufacturing roller head of rock wool fiber forming high-speed centrifugal machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110241415A CN110241415A (en) | 2019-09-17 |
| CN110241415B true CN110241415B (en) | 2021-03-12 |
Family
ID=67889520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910559179.7A Active CN110241415B (en) | 2019-06-26 | 2019-06-26 | Method for manufacturing roller head of rock wool fiber forming high-speed centrifugal machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110241415B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110512207B (en) * | 2019-09-25 | 2020-10-27 | 沈阳大陆激光工程技术有限公司 | Composite powder material for laser manufacturing and remanufacturing crystallizer copper plate and manufacturing method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651606A (en) * | 2004-09-16 | 2005-08-10 | 许正仁 | Manufacturing method of die cutting roller, press cutting roller or indentation roller |
| CN101457378A (en) * | 2007-12-11 | 2009-06-17 | 沈阳大陆激光技术有限公司 | Laser forming electro-galvanizing wire conducting roller and manufacturing method thereof |
| CN102650011A (en) * | 2011-02-28 | 2012-08-29 | 孙晓冰 | Heat, wear and hot corrosion-resistant silicide reinforced high wolframium-nickel-iron-based alloy |
| CN104294268A (en) * | 2014-09-06 | 2015-01-21 | 北京工业大学 | Preparation method of wear-resistant guide roller |
| CN106480449A (en) * | 2015-09-02 | 2017-03-08 | 沈阳大陆激光工程技术有限公司 | A kind of method that laser manufactures heavy section universal mill horizontal roller |
| CN108251836A (en) * | 2018-02-01 | 2018-07-06 | 张文秀 | A kind of laser surface alloying method of hot roll |
| CN108326287A (en) * | 2018-03-26 | 2018-07-27 | 浙江安可环保科技有限公司 | Corrosion-resistant laser cladding powder and its cladding method and purposes |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL222831B1 (en) * | 2012-12-31 | 2016-09-30 | Plasma System Spółka Akcyjna | Method for regenerating and increase the durability of the metallurgical cylinder |
-
2019
- 2019-06-26 CN CN201910559179.7A patent/CN110241415B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651606A (en) * | 2004-09-16 | 2005-08-10 | 许正仁 | Manufacturing method of die cutting roller, press cutting roller or indentation roller |
| CN101457378A (en) * | 2007-12-11 | 2009-06-17 | 沈阳大陆激光技术有限公司 | Laser forming electro-galvanizing wire conducting roller and manufacturing method thereof |
| CN102650011A (en) * | 2011-02-28 | 2012-08-29 | 孙晓冰 | Heat, wear and hot corrosion-resistant silicide reinforced high wolframium-nickel-iron-based alloy |
| CN104294268A (en) * | 2014-09-06 | 2015-01-21 | 北京工业大学 | Preparation method of wear-resistant guide roller |
| CN106480449A (en) * | 2015-09-02 | 2017-03-08 | 沈阳大陆激光工程技术有限公司 | A kind of method that laser manufactures heavy section universal mill horizontal roller |
| CN108251836A (en) * | 2018-02-01 | 2018-07-06 | 张文秀 | A kind of laser surface alloying method of hot roll |
| CN108326287A (en) * | 2018-03-26 | 2018-07-27 | 浙江安可环保科技有限公司 | Corrosion-resistant laser cladding powder and its cladding method and purposes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110241415A (en) | 2019-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102465294A (en) | Method for carrying out laser-cladding on high-hardness nickel-based alloy material in large area | |
| CN110241415B (en) | Method for manufacturing roller head of rock wool fiber forming high-speed centrifugal machine | |
| SK281343B6 (en) | Method and apparatus for the production of mineral wool | |
| CN111945156A (en) | Method for preparing centrifugal roller through laser cladding | |
| CN106435565A (en) | Iron-based alloy powder for laser refabrication of rotor journal, and refabrication method thereof | |
| CN109967913B (en) | Flux-cored wire for laser cladding of continuous casting roller and production method thereof | |
| CN101695714A (en) | Cast steel back-up roller and preparation method thereof | |
| CN113529005A (en) | Spraying manufacturing method of continuous casting roller | |
| CA2009376C (en) | Multiple segment spinner | |
| CN110747464A (en) | Preparation method of centrifugal fan steel spindle coating based on high-speed laser cladding technology | |
| CN101381867A (en) | Laser remelted alloy powder for repairing surface of high-carbon alloy steel workpieces and method for making same | |
| CN112570708A (en) | Metal powder for repairing supporting roller based on laser coaxial powder feeding process and preparation method thereof | |
| CN106591831A (en) | Self-lubricating wear-resisting coating for laser manufacturing hot rolled strip curling front guide ruler liner plate | |
| CN106756251B (en) | Laser manufacture hot-strip crimps the functionally gradient material (FGM) design technology of leading ruler liner plate | |
| CN106480449A (en) | A kind of method that laser manufactures heavy section universal mill horizontal roller | |
| CN109719456B (en) | Novel alloy wire for steel rail repair and method for repairing surface damage of steel rail | |
| CN109482843B (en) | Bimetal cast-weld composite roller and preparation method thereof | |
| CN111152554A (en) | Anilox roll and method for producing the same | |
| CN106400009B (en) | A kind of dedicated low-crackle sensitive high-performance Ni base composite powder of laser melting coating | |
| CN110228944A (en) | Rock wool is at fine supercentrifuge roller head | |
| CN102418178A (en) | Method for preparing wear-resistant bead ring | |
| CN110801907B (en) | High-wear-resistance composite casting hammer disc and preparation process thereof | |
| JP2002370192A (en) | Fiber cutting blade and method of its manufacture, fiber cutter and glass chopped strand | |
| CN101831573A (en) | Alloy for manufacturing rotary side copper plate of chemical fiber crimping machine and processing method thereof | |
| CN109868468A (en) | A kind of function-graded material in the case of the high temperature high speed abrasive wear for hot continuous rolling production line |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210329 Address after: 067499 west side of village committee of Zhaojiazhuang village, Jiashan Town, Chengde County, Chengde City, Hebei Province Patentee after: Hebei Hengren Additive Manufacturing Co.,Ltd. Address before: 067000 221, unit 2, education committee building, Nanyuan East Street, Shuangqiao District, Chengde City, Hebei Province Patentee before: Wang Hui |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240418 Address after: Room 4404, Building C, No. 555 Dongchuan Road, Minhang District, Shanghai, 200000 Patentee after: Shanghai Hengren Zhiye Engineering Technology Co.,Ltd. Country or region after: China Address before: 067499 west side of village committee of Zhaojiazhuang village, Jiashan Town, Chengde County, Chengde City, Hebei Province Patentee before: Hebei Hengren Additive Manufacturing Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |