CN106929844A - A kind of method that surface laser Alloying Treatment is carried out to shielding tunnel excavator hobboing cutter cutter ring - Google Patents
A kind of method that surface laser Alloying Treatment is carried out to shielding tunnel excavator hobboing cutter cutter ring Download PDFInfo
- Publication number
- CN106929844A CN106929844A CN201710195596.9A CN201710195596A CN106929844A CN 106929844 A CN106929844 A CN 106929844A CN 201710195596 A CN201710195596 A CN 201710195596A CN 106929844 A CN106929844 A CN 106929844A
- Authority
- CN
- China
- Prior art keywords
- hobboing cutter
- cutter ring
- alloying
- cutter
- carried out
- 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.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of method for carrying out surface laser Alloying Treatment to shielding tunnel excavator hobboing cutter cutter ring, belongs to material surface modifying technology field.Step includes：1) configuration WC/Co SiC/Co Y2O3Alloying powder；2) after by alloying powder vacuum ball milling, pasty state is modulated into absolute ethyl alcohol and lac；3) surface laser Alloying Treatment is carried out to shielding tunnel excavator hobboing cutter cutter ring；4) the hobboing cutter cutter ring after Alloying Treatment is placed in batch-type furnace, after 3 5h are incubated at a temperature of 200 300 DEG C, furnace cooling.The present invention obtains the hobboing cutter cutter ring with alloying layer, can meet the combination property requirement that hobboing cutter cutter ring is on active service in strong extruding, high pulling torque, thump, abrasion complex condition high；Process is simple, low cost, efficiency high.
Description
Technical field
The invention belongs to material surface modifying technology field, it is related to one kind to be dug to shield tunnel using laser alloying technology
Entering machine hobboing cutter cutter ring carries out the new method of surface Hardening Treatment.
Background technology
In recent years, in order to efficiently solve urban transportation contradiction and environmental issue, city function is given full play to, such as
The underground engineering constructions such as iron, tunnel are widely used advanced shield Method, and China has built up or built
Numerous subway engineerings have all largely introduced shield excavation machine and special cutting cutter spare part.Yet with the high-strength of massif rock
The complexity and boring machine cutter of degree, high rigidity and geological conditions are operated in strong extruding, high pulling torque, thump, the evil of abrasion high
Under bad operating mode, boring machine cutter is turned into most flimsy parts in tunneling process, be also the bottleneck for restricting drivage efficiency, make
The expense of cutter accounts for 30% or so of whole excavation cost, and domestic more than 90% shield machine cutter is all from external import
's.Therefore, it is comprehensive to improve while intensity and toughness excellent inside hobboing cutter is kept using advanced process for modifying surface
The hardness on its surface, wearability and heat-resistant anti-fatigue performance, the durability to improving hobboing cutter have important realistic meaning.
Laser alloying technology is to utilize high energy laser beam, makes the alloying element of base material top layer and addition melt-blended, from
And form the new surface alloying layer with former base material as base.There is the fuel factor of even tissue densification, matrix due to this technology
The distinguishing feature such as low, excellent performance, flexibility degree be high and process costs are cheap, and it is subject to the wide of domestic and international Related Research Domain
General concern.
With deepening continuously that laser alloying is studied, alloying material is from the metal or nonmetallic with certain property
Progressively develop into ceramic material.Because ceramic material has inoxidizability high, corrosion resistance, wearability and low thermal conductivity factor etc.
Characteristic, is that most commonly used class alloying material is studied in current laser alloying.The involved ceramic species of research are very numerous
It is many, not only including various carbide, nitride, boride and oxide, and including the hard of various metal or alloy cladding
Ceramic particle.But because the thermal physical property parameter between ceramic particle and base material has larger difference, during laser alloying
The defects such as crackle and hole are also easy to produce, under strong extruding, high pulling torque, thump, the service condition of abrasion high, alloying layer is easily
Generation Crack Extension, UNICOM, even come off.And nano ceramic material not only has because of its special structure snd size effect
Excellent mechanical property, and its surface and internal flaw are few, dispersiveness is high, can to a certain extent alleviate interfacial stress concentration,
So as to reduce the cracking sensitivity of alloying layer, and realize that nano ceramic material forms good interface cohesion with base material, play
Hard phase humidification.
The size of nano-ceramic particle and distribution are the key factors for determining alloying layer structures and performance.In laser alloy
During change, the nano-ceramic particle inside laser molten pool is penetrated into certain kinetic energy, due to itself size and movement characteristic,
And the convection current stirring action of alloy melt, the interaction between nano particle can be caused, polymerization is brought it about, or even occur
Particle studded formula is grown up, so as to lose its nanometer size effect.If in nano-ceramic particle surface clad element, formed
Core shell structure, then can to a certain extent suppress the reunion of nano-ceramic particle, at the same further improve nano-ceramic particle with
Interface cohesion between matrix.But this method still have certain limitation, its be difficult to suppress nano-ceramic particle because with conjunction
Floating or subsiding movement caused by golden melt difference in specific gravity, make particle collide and mutually be polymerized.If in alloying powder
In introduce two kinds of antipodal nano-ceramic particles of motion simultaneously, using the mutual inhibition between them, then can be good
Solve because of agglomeration traits caused by ceramic particle displacement, improve the uniformity that ceramic particle is distributed.Additionally, rare-earth oxidation
Thing Y2O3With purification liquid phase ingredient, Grain refinement.If can enter in nano particle by the addition of certain stoichiometric proportion
One step improves the mechanical property of alloying layer, to reach the perfect knot of material surface hardness, toughness, intensity and the performance such as wear-resisting
Close.
The content of the invention
Shielding tunnel excavator hobboing cutter cutter ring is carried out using laser alloying technology it is an object of the invention to provide one kind
The method of surface Hardening Treatment, strong extruding, high pulling torque, thump, height are born to meet hobboing cutter cutter ring under severe Service Environment
The new method of the performance requirements such as abrasion.
In order to achieve the above object, technical solution of the invention is：
A kind of method that surface laser Alloying Treatment is carried out to shielding tunnel excavator hobboing cutter cutter ring, based on shield tunnel
Development machine hobboing cutter cutter ring military service performance requirement, carries out the optimization design of alloying coating material, and by regulating and controlling laser alloying
Technique and follow-up heat treatment process, the nano-particle reinforcement for forming Dispersed precipitate on shielding tunnel excavator hobboing cutter cutter ring surface are closed
Aurification layer, the comprehensive mechanical property for improving hobboing cutter cutter ring surface, is substantially improved its service life.Comprise the following steps：
(1) alloyage powder
Alloyage powder, described alloying powder includes that granularity is for the WC/Co powder of 60-100nm, granularity
The SiC/Co and granularity of 80-120nm are 45-180 μm of Y2O3, wherein, SiC/Co and Y2O3Addition is respectively 10-15wt.%
And 0.5-1.5wt.%, remaining is WC/Co powder.WC/Co powder is the host material of alloying coating, and SiC/Co is dispersion
Agent, Y2O3Powder is toughness reinforcing phase.
The design philosophy of alloying powder is：It is comprehensive to improve alloying using nanometer WC high rigidity and nanometer size effect
The hardness of layer, intensity and wearability；Using SiC and WC direction of motion opposite characteristics in laser molten pool, suppress WC and closed in laser
Subsiding movement during aurification, the dispersiveness of nanometer WC is improved with this；Nano particle cladding Co can improve between particle and matrix
Interface binding characteristic, and can suppress to cause nano particle to be reunited because of nanometer size effect to a certain extent；Using dilute
Native oxide Y2O3Purification liquid phase ingredient effect, improves matrix undercooling degree, and then by crystal grain refinement, reach matrix good
Good combination of strength and toughness；
(2) pasty state alloying powder is prepared
The WC/Co-SiC/Co-Y that step (1) is configured2O3Alloying powder is positioned over mixed on low speed ball in vacuum ball mill
Mill 8-15h, it is ensured that its homogenization of composition；After ball milling, alloying powder is positioned in the mixture of solvent and binding agent, will closed
Aurification powder is modulated into pasty state；Described solvent and the volume ratio of binding agent are 100:6, solvent is absolute ethyl alcohol, and binding agent is
Lac；Described drum's speed of rotation is 150-300r/min.
(3) surface laser Alloying Treatment is carried out to shielding tunnel excavator hobboing cutter cutter ring
3.1) shielding tunnel excavator hobboing cutter cutter ring is held on laser works platform, with sand papering hobboing cutter cutter ring,
Its surface scale and dirt are removed, and surface is cleaned with solution.Described solution is acetone soln.
3.2) the nanometer WC/Co-SiC/Co-Y of the pasty state for obtaining step (2)2O3Alloy powder is uniformly painted on hobboing cutter knife
Circle surface, its layer thickness control is in the range of 0.2-0.5mm；
3.3) after natural drying to be coated, start laser and Digit Control Machine Tool is positioned to hobboing cutter cutter ring working origin；
Profile-followed Laser Alloying Treatment is carried out to hobboing cutter cutter ring according to single-screw scanning track under atmospheric environment；Complete hobboing cutter cutter ring one
After the Laser Alloying Treatment of face, another side is turned to, carry out original point position to it again, and sweep according to same as described above
Track and technological parameter are retouched, surface laser Alloying Treatment is carried out to this face.The technological parameter for being used is laser power 2.0-
3.0kW, spot diameter 3-5mm, line sweep speed 4-10mm/s, amount of lap 20-30%.
(4) laser alloying subsequent treatment
Step (3) is carried out the hobboing cutter cutter ring after Laser Alloying Treatment to be placed in batch-type furnace, at a temperature of 200-300 DEG C
After insulation 3-5h, furnace cooling eliminates produced in alloying layer residual stress during laser alloying, it is to avoid its
Ftracture.
The invention has the advantages that, the hobboing cutter cutter ring with alloying layer is obtained using the present invention, hobboing cutter can be met
The combination property requirement that cutter ring is on active service in strong extruding, high pulling torque, thump, abrasion complex condition high；Process is simple, cost
Low, efficiency high.Actual verification under coastal massif rock complex geological condition shows, through the hobboing cutter cutter ring of Laser Alloying Treatment
Life-span of the more untreated hobboing cutter cutter ring of service life improve more than 4 times.
Specific embodiment
With reference to specific embodiment, technical scheme is further illustrated.
According to 89.0%WC/Co (granularity 60-100nm), 10.0%SiC/Co (granularity 80-120nm) and 1.0%Y2O3(grain
Degree 45-180 μm) mass percent matched, be then placed in vacuum ball mill, the ball milling under 200r/min rotating speeds
10h, so that its homogenization of composition.The alloying powder that will be mixed is placed in glassware, is 100 with volume ratio:6 it is anhydrous
Ethanol and lac mixed liquor are modulated into pasty state；
Hob cutter ring of shield machine is held on 5kW crossing currents CO2On laser works platform, successively from 300# and 800# metallographics
Sand papering cutter ring, to remove its surface scale and dirt, and is carefully cleaned with acetone soln.Then pasty state will be modulated into
Alloy powder is uniformly painted on cutter ring surface, and its thickness is about 0.4mm；After natural drying to be coated, start laser and numerical control
Lathe is positioned to work pieces process origin, then under atmospheric environment according to single-screw scanning track hobboing cutter cutter ring is carried out with
Shape Laser Alloying Treatment.The specific process parameter for being used is laser power 2.5kW, spot diameter 4mm, line sweep speed
6mm/s, amount of lap 20%.Treat after the completion of hobboing cutter cutter ring one side laser alloying, turn to another side, it is carried out again
Positioning, and according to scanning track same as described above and technological parameter, Laser Alloying Treatment is carried out to this face；
To be placed in batch-type furnace through Laser Alloying Treatment hobboing cutter cutter ring, 5h will be incubated at a temperature of 250 DEG C.Then it is cold with stove
But, with the residual stress produced by eliminating during laser alloying inside the hobboing cutter cutter ring, it is to avoid it ftractures.
Using the present invention can the hobboing cutter cutter ring surface being made of H13 steel obtain 0.8-1.2mm it is thick, with high rigidity and good
The alloying layer of good combination of strength and toughness.Actual verification under coastal massif rock complex geological condition shows, through laser alloy
The life-span for changing the more untreated hobboing cutter cutter ring of service life of the hobboing cutter cutter ring for the treatment of improves more than 4 times, i.e., by original three weeks
Improve to more than three months.It is 150,000 yuan of calculating by each tool changing direct economic loss, the use of the technology disposably can section
Up to more than 600,000 yuan, thus for production firm brings considerable social and economic benefit, and the technology has technique letter concurrently to about fund
Many advantages, such as list, low cost, efficiency high.
Claims (8)
1. a kind of method that surface laser Alloying Treatment is carried out to shielding tunnel excavator hobboing cutter cutter ring, it is characterised in that below
Step：
(1) alloyage powder
Alloyage powder, alloying powder includes WC/Co powder, the conduct dispersion as the host material of alloying coating
The SiC/Co of the agent and Y as toughness reinforcing phase2O3, wherein, SiC/Co and Y2O3Addition is respectively 10-15wt.% and 0.5-
1.5wt.%, remaining is WC/Co powder；
(2) pasty state alloying powder is prepared
The WC/Co-SiC/Co-Y that step (1) is configured2O3Alloying powder is positioned over mixed on low speed ball milling 8- in vacuum ball mill
15h, it is ensured that its homogenization of composition；After ball milling, it is placed in the mixture of solvent and binding agent, alloying powder is modulated
Into pasty state；
(3) surface laser Alloying Treatment is carried out to shielding tunnel excavator hobboing cutter cutter ring
3.1) shielding tunnel excavator hobboing cutter cutter ring is held on laser works platform, with sand papering hobboing cutter cutter ring, removal
Its surface scale and dirt, and clean surface with solution；
3.2) the nanometer WC/Co-SiC/Co-Y of the pasty state for obtaining step (2)2O3Alloy powder is uniformly painted on hobboing cutter cutter ring table
Face, its layer thickness control is in the range of 0.2-0.5mm；
3.3) after coating is spontaneously dried, start laser and Digit Control Machine Tool is positioned to hobboing cutter cutter ring working origin；In air
Profile-followed Laser Alloying Treatment is carried out to hobboing cutter cutter ring according to single-screw scanning track under environment；Complete the face laser of hobboing cutter cutter ring one
After Alloying Treatment, another side is turned to, carry out original point position to it again, and according to scanning track same as described above
And technological parameter, surface laser Alloying Treatment is carried out to this face；The technological parameter for using is laser power 2.0-3.0kW, light
Spot diameter 3-5mm, line sweep speed 4-10mm/s, amount of lap 20-30%；
(4) laser alloying subsequent treatment
Step (3) is carried out the hobboing cutter cutter ring after Laser Alloying Treatment to be placed in batch-type furnace, is incubated at a temperature of 200-300 DEG C
After 3-5h, furnace cooling.
2. it is according to claim 1 a kind of surface laser Alloying Treatment to be carried out to shielding tunnel excavator hobboing cutter cutter ring
Method, it is characterised in that the WC/Co powder sizes described in step (1) are 60-100nm, SiC/Co granularities are 80-120nm,
Y2O3Granularity is 45-180 μm.
3. it is according to claim 1 and 2 a kind of shielding tunnel excavator hobboing cutter cutter ring to be carried out at surface laser alloying
The method of reason, it is characterised in that the volume ratio of solvent and binding agent described in step (2) is 100:6, solvent is anhydrous second
Alcohol, binding agent is lac.
4. it is according to claim 1 and 2 a kind of shielding tunnel excavator hobboing cutter cutter ring to be carried out at surface laser alloying
The method of reason, it is characterised in that the vacuum drum's speed of rotation described in step (2) is 150-300r/min.
5. it is according to claim 3 a kind of surface laser Alloying Treatment to be carried out to shielding tunnel excavator hobboing cutter cutter ring
Method, it is characterised in that the vacuum drum's speed of rotation described in step (2) is 150-300r/min.
6. a kind of according to claim 1 or 2 or 5 carries out surface laser alloying to shielding tunnel excavator hobboing cutter cutter ring
The method for the treatment of, it is characterised in that step 3.1) described in solution be acetone soln.
7. it is according to claim 3 a kind of surface laser Alloying Treatment to be carried out to shielding tunnel excavator hobboing cutter cutter ring
Method, it is characterised in that step 3.1) described in solution be acetone soln.
8. it is according to claim 4 a kind of surface laser Alloying Treatment to be carried out to shielding tunnel excavator hobboing cutter cutter ring
Method, it is characterised in that step 3.1) described in solution be acetone soln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195596.9A CN106929844B (en) | 2017-03-29 | 2017-03-29 | The method that a kind of pair of shielding tunnel excavator hobboing cutter cutter ring carries out surface laser Alloying Treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195596.9A CN106929844B (en) | 2017-03-29 | 2017-03-29 | The method that a kind of pair of shielding tunnel excavator hobboing cutter cutter ring carries out surface laser Alloying Treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106929844A true CN106929844A (en) | 2017-07-07 |
| CN106929844B CN106929844B (en) | 2019-04-23 |
Family
ID=59426150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710195596.9A Expired - Fee Related CN106929844B (en) | 2017-03-29 | 2017-03-29 | The method that a kind of pair of shielding tunnel excavator hobboing cutter cutter ring carries out surface laser Alloying Treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106929844B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338438A (en) * | 2017-07-18 | 2017-11-10 | 西安热工研究院有限公司 | A kind of wear-resisting laser cladding layer of hobboing cutter cutter ring and preparation method thereof |
| CN116618685A (en) * | 2023-07-26 | 2023-08-22 | 赣州海盛硬质合金有限公司 | Alloy numerical control blade for precision machining and preparation process thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04350154A (en) * | 1991-05-27 | 1992-12-04 | Tocalo Co Ltd | Member for hot-dip metal bath |
| CN101381836A (en) * | 2008-10-27 | 2009-03-11 | 王铀 | Nano modified WC/Co cemented carbide material and manufacturing method thereof |
| CN101760685A (en) * | 2008-12-25 | 2010-06-30 | 北京有色金属研究总院 | Superfine WC-Co cemented carbide containing rare-earth elements and preparation method thereof |
| CN103266311A (en) * | 2013-05-23 | 2013-08-28 | 成都大光热喷涂材料有限公司 | Method for preparing WC-Co powder doped with rare earth elements |
| CN104264029A (en) * | 2014-10-13 | 2015-01-07 | 沈阳工业大学 | Nano composite abrasion-resistant alloy for abrasion-resistant steel and preparation technology for nano composite abrasion-resistant alloy |
| CN104388717A (en) * | 2014-12-15 | 2015-03-04 | 中南大学 | Method for quickly preparing gradient cemented carbide by adding rare-earth elements |
| CN104692803A (en) * | 2015-02-15 | 2015-06-10 | 广东省工业技术研究院(广州有色金属研究院) | Preparation method of wear-resistant composite material preform |
-
2017
- 2017-03-29 CN CN201710195596.9A patent/CN106929844B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04350154A (en) * | 1991-05-27 | 1992-12-04 | Tocalo Co Ltd | Member for hot-dip metal bath |
| CN101381836A (en) * | 2008-10-27 | 2009-03-11 | 王铀 | Nano modified WC/Co cemented carbide material and manufacturing method thereof |
| CN101760685A (en) * | 2008-12-25 | 2010-06-30 | 北京有色金属研究总院 | Superfine WC-Co cemented carbide containing rare-earth elements and preparation method thereof |
| CN103266311A (en) * | 2013-05-23 | 2013-08-28 | 成都大光热喷涂材料有限公司 | Method for preparing WC-Co powder doped with rare earth elements |
| CN104264029A (en) * | 2014-10-13 | 2015-01-07 | 沈阳工业大学 | Nano composite abrasion-resistant alloy for abrasion-resistant steel and preparation technology for nano composite abrasion-resistant alloy |
| CN104388717A (en) * | 2014-12-15 | 2015-03-04 | 中南大学 | Method for quickly preparing gradient cemented carbide by adding rare-earth elements |
| CN104692803A (en) * | 2015-02-15 | 2015-06-10 | 广东省工业技术研究院(广州有色金属研究院) | Preparation method of wear-resistant composite material preform |
Non-Patent Citations (2)
| Title |
|---|
| 张思玉等: "激光熔覆硬质合金WC-SiC-Co性能的研究", 《激光杂志》 * |
| 陈小怡等: "Y2O3对硬质合金晶粒尺寸和摩擦磨损性能的影响", 《粉末冶金技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338438A (en) * | 2017-07-18 | 2017-11-10 | 西安热工研究院有限公司 | A kind of wear-resisting laser cladding layer of hobboing cutter cutter ring and preparation method thereof |
| CN116618685A (en) * | 2023-07-26 | 2023-08-22 | 赣州海盛硬质合金有限公司 | Alloy numerical control blade for precision machining and preparation process thereof |
| CN116618685B (en) * | 2023-07-26 | 2023-09-26 | 赣州海盛硬质合金有限公司 | Alloy numerical control blade for precision machining and preparation process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106929844B (en) | 2019-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102352508B (en) | Iron-based alloy powder for laser cladding of TRT (Blast Furnace Top Pressure Recovery Turbine Unit) parts | |
| CN103834893B (en) | A kind of electric spark deposition strengthens the method for metal hydroturbine runner blade surface in conjunction with plasma cladding | |
| CN106929844B (en) | The method that a kind of pair of shielding tunnel excavator hobboing cutter cutter ring carries out surface laser Alloying Treatment | |
| CN103556002B (en) | High-performance Ni base alloy-TiB 2nanometer powder and preparation method thereof | |
| CN101748404A (en) | Coating structure with micropore transition layer and preparation method thereof | |
| CN103752818B (en) | A kind of composite powder containing high chromium content for laser melting coating | |
| CN106929845B (en) | Method for preparing iron-based amorphous and nanocrystalline coating | |
| CN106191853A (en) | A kind of wear resistant friction reducing cermet composite coating technique of hot die steel | |
| CN107675170A (en) | A kind of preparation method of offshore platform steel surface laser cladding differential arc oxidation coating | |
| CN104084748A (en) | Repairing method for ring mold | |
| CN106480380A (en) | A kind of laser manufactures the iron(-)base powder of low-speed heave-load marine diesel engine piston annular groove | |
| CN103817320A (en) | Cobalt-based composite powder used for restoring rack of rolling mill and method for restoring rack of rolling mill | |
| CN110479979A (en) | The production method of bimetallic cutter ring of composite hob cutter | |
| CN107435118A (en) | A kind of method that spheroidal graphite cast-iron and its Cast Iron Surface laser melting coating produce coating | |
| CN102633516B (en) | Wear-resistant and anti-corrosion puddle | |
| CN105154739B (en) | Wear-resisting and corrosion-resisting alloy for bucket teeth and preparing method of wear-resisting and corrosion-resisting alloy | |
| CN105671544A (en) | Method for improving wear-resisting property of 42CrMo steel in laser cladding through cladding powder | |
| CN106167889B (en) | A kind of steel alloy face coat cladding method | |
| CN105506505A (en) | Laser cladding Fe-base alloy powder for repairing damaged axial flow fan blade and repairing method | |
| CN106222652A (en) | A kind of WC/Fe base Argon arc cladding alloy powder | |
| CN115404476A (en) | Alloy powder for laser cladding in-situ generation and cladding layer prepared by using same | |
| CN103498146B (en) | A kind of laser cladding method for T-shaped punch head surface | |
| CN102416531A (en) | Slag-free surfacing welding rod | |
| CN108265289A (en) | A kind of method of Argon arc cladding fabricated in situ various reinforced phase composite coating | |
| CN204714879U (en) | A kind of cold rolled silicon steel furnace roller with the wear-resistant nano coating of resistance to moisture of resistive connection knurl |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190423 |