CN114703392A - Wear-resistant hardware product and preparation method thereof - Google Patents
Wear-resistant hardware product and preparation method thereof Download PDFInfo
- Publication number
- CN114703392A CN114703392A CN202210408866.0A CN202210408866A CN114703392A CN 114703392 A CN114703392 A CN 114703392A CN 202210408866 A CN202210408866 A CN 202210408866A CN 114703392 A CN114703392 A CN 114703392A
- Authority
- CN
- China
- Prior art keywords
- layer
- aluminum alloy
- wear
- resistant
- hardware
- 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
Images
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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/05—Alloys based on copper with manganese as the next major 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses an anti-wear hardware product and a preparation method thereof, wherein the anti-wear hardware product comprises a hardware body, wherein the hardware body consists of an aluminum alloy matrix, an oxidation resistant layer, a corrosion resistant layer and an anti-wear layer, the oxidation resistant layer is sprayed on the surface of the aluminum alloy matrix, the corrosion resistant layer is sprayed on the surface of the oxidation resistant layer, and the anti-wear layer is sprayed on the surface of the corrosion resistant layer. According to the invention, the 7-series aluminum alloy matrix is adopted to treat the surface oxidation layer, and then the oxidation resistant layer is sprayed on the surface of the oxidation resistant layer, so that the prepared hardware product has better wear resistance and corrosion resistance, and the service life of the hardware product is prolonged.
Description
Technical Field
The invention relates to a hardware product, in particular to an anti-abrasion hardware product and a preparation method thereof, and belongs to the technical field of hardware products.
Background
The hardware product is an auxiliary and accessory finished product used in daily life and industrial production. Early days, the alloy was made of metal materials such as gold, silver, copper, iron and tin, so it was named. At present, besides various metal materials, the material is also widely made of non-metal materials such as plastics, glass fiber and the like.
The existing hardware products are poor in wear resistance, and are easy to cause surface wear and damage in the long-term use process, so that the service life of the product is influenced, and therefore, the wear-resistant hardware products and the preparation method thereof need to be designed.
Disclosure of Invention
The invention aims to provide an anti-wear hardware product and a preparation method thereof, and aims to solve the problems that the existing hardware product in the background art is poor in anti-wear performance, and the surface of the existing hardware product is easy to wear and damage in the long-term use process, so that the service life of the object product is influenced.
In order to achieve the purpose, the invention provides the following technical scheme: the anti-corrosion and anti-abrasion hardware comprises a hardware body, wherein the hardware body consists of an aluminum alloy base body, an oxidation resistant layer, an anti-corrosion layer and an anti-abrasion layer, the oxidation resistant layer is coated on the surface of the aluminum alloy base body, the anti-corrosion layer is coated on the surface of the oxidation resistant layer, and the anti-abrasion layer is coated on the surface of the anti-corrosion layer.
In a preferred embodiment of the present invention, the aluminum alloy substrate is a 7-series aluminum alloy.
As a preferable technical scheme of the invention, the anti-oxidation layer is composed of 30% of Ni and 70% of Al in percentage by mass203。
As a preferable technical scheme of the invention, the corrosion-resistant layer comprises 0.31-0.36 mass percent of C, 1.8 mass percent of Mn, 1.1 mass percent of Si and the balance of Cu.
As a preferable technical scheme of the invention, the anti-wear layer comprises 16.0-20.0% of Cr, 8.0-11.0% of Ni, 2.7-3.5% of B, 2.8-3.6% of Si, 0.7-0.9% of C and the balance of Fe by mass fraction.
As a preferred technical scheme of the invention, the method comprises the following steps:
step S1: selecting a 7-series aluminum alloy matrix to carry out pretreatment on the surface of the 7-series aluminum alloy matrix, carrying out oil coating treatment on the 7-series aluminum alloy matrix, then selecting a dry sand blasting machine to carry out sand blasting treatment on a matrix material, and observing that the surface of the base material has no metallic luster;
step S2: mixing 30 percent of Ni and 70 percent of Al in percentage by mass203Mixing, preparing an antioxidant coating, drying by a dryer at 100 ℃, and spraying an antioxidant layer on the surface of the 7-series aluminum in the step S1 by adopting ZB-80K plasma control equipment;
step S3: mixing 0.3:1-0.36C%, 1.8% Mn, 1.1% Si and the balance Cu to prepare an anti-corrosion coating, heating by a heat treatment process, and spraying the mixture on the surface of the aluminum alloy substrate in the step S2 by using plasma control equipment;
step S4: mixing 16.0-20.0% of Cr, 8.0-11.0% of Ni, 2.7-3.5% of B, 2.8-3.6% of Si, 0.7-0.9% of C and the balance of Fe by mass to prepare the wear-resistant coating, and spraying the aluminum alloy matrix in the HVOF spraying process step S3 to finish the preparation of the hardware body.
As a preferred embodiment of the present invention, the blasting time in step S1 is 1min to 2 min.
As a preferable technical scheme of the invention, the surface temperature of the 7-series aluminum sprayed in the steps S2, S3 and S4 is 200-26 ℃, and micro-areas of the aluminum alloy can reach a micro-melting state of metallurgical bonding, so that the bonding of the coating and the substrate is realized.
Compared with the prior art, the invention has the beneficial effects that:
according to the wear-resistant hardware product and the preparation method thereof, the 7-series aluminum alloy matrix is adopted to treat the surface oxidation layer, and then the oxidation-resistant layer is sprayed on the surface of the oxidation-resistant layer, so that the prepared hardware product has good wear resistance and corrosion resistance, and the service life of the hardware product is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a hardware product of the present invention.
In the figure: 1. a hardware body; 2. an aluminum alloy substrate; 3. an anti-oxidation layer; 4. a corrosion-resistant layer; 5. and an anti-wear layer.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a wear-resistant hardware product and a method for manufacturing the same, wherein the method comprises the following steps:
wear-resistant hardware product
According to the figure 1, the anti-corrosion and anti-abrasion hardware comprises a hardware body 1, wherein the hardware body 1 is composed of an aluminum alloy matrix 2, an oxidation resistant layer 3, an anti-corrosion layer 4 and an anti-abrasion layer 5, the oxidation resistant layer 3 is sprayed on the surface of the aluminum alloy matrix 2, the anti-corrosion layer 4 is sprayed on the surface of the oxidation resistant layer 3, the anti-abrasion layer 5 is sprayed on the surface of the anti-corrosion layer 4, the aluminum alloy matrix 2 is 7-series aluminum alloy, and the oxidation resistant layer 3 is 30% Ni and 70% Al in mass fraction203，The corrosion-resistant layer 4 comprises, by mass, 0.31-0.36% of C, 1.8% of Mn, 1.1% of Si, and the balance of Cu, and the abrasion-resistant layer 5 comprises, by mass, 16.0-20.0% of Cr, 8.0-11.0% of Ni, 2.7-3.5% of B, 2.8-3.6% of Si, 0.7-0.9% of C, and the balance of Fe.
Preparation method of wear-resistant hardware product
Step S1: selecting a 7-series aluminum alloy matrix to carry out pretreatment on the surface of the 7-series aluminum alloy matrix, carrying out oil coating treatment on the 7-series aluminum alloy matrix, then selecting a dry sand blasting machine to carry out sand blasting treatment on a matrix material until the surface of the matrix material is observed to have no metallic luster, wherein the sand blasting time in the step S1 is 1-2 min;
step S2: mixing 30 percent of Ni and 70 percent of Al in percentage by mass203Mixing, preparing an antioxidant coating, drying by a dryer at 100 ℃, and spraying an antioxidant layer on the surface of the 7-series aluminum in the step S1 by adopting ZB-80K plasma control equipment;
step S3: mixing 0.3:1-0.36C%, 1.8% Mn, 1.1% Si and the balance Cu to prepare an anti-corrosion coating, heating by a heat treatment process, and spraying the mixture on the surface of the aluminum alloy substrate in the step S2 by using plasma control equipment;
step S4: mixing 16.0-20.0% of Cr, 8.0-11.0% of Ni, 2.7-3.5% of B, 2.8-3.6% of Si, 0.7-0.9% of C and the balance of Fe by mass to prepare the wear-resistant coating, and spraying the aluminum alloy matrix in the HVOF spraying process step S3 to finish the preparation of the hardware body.
And S2, S3 and S4, the surface temperature of the sprayed 7-series aluminum is 200-26 ℃, and micro-areas of the aluminum alloy can reach a micro-melting state of metallurgical bonding, so that the bonding of the coating and the substrate is realized. In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are only for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the present invention.
Abrasion resistance test of abrasion-resistant hardware
The friction and wear test of the friction of the prepared hardware is carried out on a QG-700 type high-temperature atmosphere friction and wear testing machine under the conditions of normal temperature of 24 ℃, relative humidity of 32%, constant load of 720g, constant rotating speed of 400r/min, friction radius of 2mm, time of 15min and total rotating speed of 6000r, a ball-disc contact mode is selected, a GCr15 steel ball with the diameter of 6.3 mm is selected for a grinding ball, the friction coefficient is automatically acquired by a main control computer program and is visually displayed on a computer. The wear rate is calculated according to formula (1), where w is the wear rate, is the wear volume per unit load per unit sliding distance, mm 3/(N · m); AV is the wear volume, mm3, AV =2xrA, wherein A is characterized by a Nanofocus AG type three-dimensional surface profiler
Cross-sectional wear scar area (mm 2) of the coating of (a); r is the friction radius, mm; n is the total number of revolutions, r; f is the load, and N gives a result with a significant performance improvement over existing hardware.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an anti-abrasion hardware, includes hardware body (1), its characterized in that, hardware body (1) comprises aluminum alloy base member (2), oxidation resisting layer (3), corrosion-resistant layer (4) and anti-abrasion layer (5), the surface coating of aluminum alloy base member (2) has oxidation resisting layer (3), the surface coating of oxidation resisting layer (3) has corrosion-resistant layer (4), the surface coating of corrosion-resistant layer (4) has anti-abrasion layer (5).
2. An abrasion-resistant hardware product according to claim 1, characterized in that: the aluminum alloy substrate (2) is a 7-series aluminum alloy.
3. The wear-resistant hardware product according to claim 1, characterized in that: the anti-oxidation layer (3) is composed of 30% of Ni and 70% of Al in percentage by mass203。
4. The wear-resistant hardware product according to claim 1, characterized in that: the corrosion-resistant layer (4) comprises 0.31-0.36C% of mass fraction, 1.8% of Mn, 1.1% of Si and the balance of Cu.
5. An abrasion-resistant hardware product according to claim 1, characterized in that: the anti-wear layer (5) comprises 16.0-20.0% of Cr, 8.0-11.0% of Ni, 2.7-3.5% of B, 2.8-3.6% of Si, 0.7-0.9% of C and the balance of Fe by mass percentage.
6. The preparation method of the wear-resistant hardware product is characterized by comprising the following steps of: the method comprises the following steps:
step S1: selecting a 7-series aluminum alloy matrix to carry out pretreatment on the surface of the 7-series aluminum alloy matrix, carrying out oil coating treatment on the 7-series aluminum alloy matrix, then selecting a dry sand blasting machine to carry out sand blasting treatment on a matrix material, and observing that the surface of the base material has no metallic luster;
step S2: mixing 30 percent of Ni and 70 percent of Al in percentage by mass203Mixing, preparing an antioxidant coating, drying by a dryer at 100 ℃, and spraying an antioxidant layer on the surface of the 7-series aluminum in the step S1 by adopting ZB-80K plasma control equipment;
step S3: mixing 0.3:1-0.36C%, 1.8% Mn, 1.1% Si and the balance Cu to prepare an anti-corrosion coating, heating by a heat treatment process, and spraying the mixture on the surface of the aluminum alloy substrate in the step S2 by using plasma control equipment;
step S4: mixing 16.0-20.0% of Cr, 8.0-11.0% of Ni, 2.7-3.5% of B, 2.8-3.6% of Si, 0.7-0.9% of C and the balance of Fe by mass to prepare the wear-resistant coating, and spraying the aluminum alloy matrix in the HVOF spraying process step S3 to finish the preparation of the hardware body.
7. The method for preparing the wear-resistant hardware product according to claim 6, characterized by comprising the following steps: the sand blasting time in the step S1 is 1min-2 min.
8. The method for preparing wear-resistant hardware according to claim 6, characterized in that: the temperature of the surface of the 7-series aluminum sprayed in the steps S2, S3 and S4 is 200-26 ℃, and the micro-area of the aluminum alloy can reach a micro-melting state of metallurgical bonding, so that the bonding of the coating and the substrate is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210408866.0A CN114703392A (en) | 2022-04-19 | 2022-04-19 | Wear-resistant hardware product and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210408866.0A CN114703392A (en) | 2022-04-19 | 2022-04-19 | Wear-resistant hardware product and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114703392A true CN114703392A (en) | 2022-07-05 |
Family
ID=82173935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210408866.0A Pending CN114703392A (en) | 2022-04-19 | 2022-04-19 | Wear-resistant hardware product and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114703392A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756715A (en) * | 2016-12-08 | 2017-05-31 | 钦州太平电子科技有限公司 | A kind of preparation method of aluminum alloy corrosion resistant coating |
| CN211222342U (en) * | 2019-08-07 | 2020-08-11 | 杭州萧山钱鸿交通器材有限公司 | Strip steel for small hardware products |
| CN212656714U (en) * | 2020-06-02 | 2021-03-05 | 北京市开泰钢木制品有限公司 | Anti-deformation aluminum alloy window |
| CN212889267U (en) * | 2020-07-16 | 2021-04-06 | 江西融兴铝业有限公司 | Wear-resistant building aluminum alloy |
| CN215620531U (en) * | 2021-08-02 | 2022-01-25 | 阳谷天马建筑材料有限公司 | Municipal works are with high security road construction protection network |
-
2022
- 2022-04-19 CN CN202210408866.0A patent/CN114703392A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756715A (en) * | 2016-12-08 | 2017-05-31 | 钦州太平电子科技有限公司 | A kind of preparation method of aluminum alloy corrosion resistant coating |
| CN211222342U (en) * | 2019-08-07 | 2020-08-11 | 杭州萧山钱鸿交通器材有限公司 | Strip steel for small hardware products |
| CN212656714U (en) * | 2020-06-02 | 2021-03-05 | 北京市开泰钢木制品有限公司 | Anti-deformation aluminum alloy window |
| CN212889267U (en) * | 2020-07-16 | 2021-04-06 | 江西融兴铝业有限公司 | Wear-resistant building aluminum alloy |
| CN215620531U (en) * | 2021-08-02 | 2022-01-25 | 阳谷天马建筑材料有限公司 | Municipal works are with high security road construction protection network |
Non-Patent Citations (1)
| Title |
|---|
| 覃思思等: "铝合金表面耐磨涂层的制备研究", 兵器材料科学与工程, vol. 39, no. 02, pages 91 - 94 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Du et al. | Effect of cobalt content on high-temperature tribological properties of TiC-Co coatings | |
| CN110117788A (en) | A kind of preparation method of CoCrFeMnNi high-entropy alloy cladding layer | |
| CN105463444B (en) | Preparation method applied to sinking roller and the wear-resistant composite coating of the resistance to corrode of stabilizing roller | |
| CN109207901A (en) | Ceramic cooker and preparation method thereof and culinary art equipment | |
| CN105643208A (en) | Production process suitable for high-strength round link chain under marine environment | |
| CN107988574A (en) | A kind of cold rolling acid milling train pulling-straightening roller with wear-resistant resistance to cracking nano coating | |
| CN109967913A (en) | A kind of flux-cored wire and its production method for Continuous Casting Rolls laser melting coating | |
| CN108531844B (en) | Preparation method of rare earth oxide doped high-temperature oxidation resistant and wear-resistant coating for H13 steel surface protection | |
| CN104043821A (en) | Corrosion-resisting powder for spraying and preparation method thereof | |
| CN101637806B (en) | Manufacturing method of metal ceramic coating crystallizer copper plate | |
| CN110438436B (en) | High-temperature wear-resistant anticorrosive coating suitable for power plant water-cooled wall and preparation method thereof | |
| JPH0641626B2 (en) | Thermal spray composite powder | |
| JPS604902B2 (en) | Metal substrate with adhesive anti-corrosion coating and method for manufacturing the same | |
| CN108401541B (en) | Aviation high speed light loading self-lubricating knuckle bearing abrasion-proof ceramic coat and preparation method | |
| CN111074192A (en) | Ni bag MoS2Self-lubricating Cr3C2Preparation method of NiCr coating | |
| CN114703392A (en) | Wear-resistant hardware product and preparation method thereof | |
| CN109513905A (en) | A kind of preparation method being surface-treated the iron-based composite wear-resistant part of ZTA particle enhanced steel | |
| CN110699627A (en) | Corrosion-resistant electric arc spraying powder core wire material and coating preparation method | |
| CN207655648U (en) | A kind of cold rolling acid milling train pulling-straightening roller of wear-resistant resistance to cracking | |
| CN103343313B (en) | Method for improving abrasive resistance of overhang hardware fittings of power transmission line | |
| CN109898046A (en) | Preventing corrosion from molten metals, abrasion axle sleeve protective coating preparation method | |
| CN102758162B (en) | Plating solution and plating method for aluminum alloy plated steel plate | |
| CN110195228A (en) | Anti- aluminum melting corrosion resistant coating and preparation method thereof | |
| CN109133937B (en) | Ternary boride and preparation method and application thereof | |
| CN103785150B (en) | Surface of golf club head processing method |
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 |