CN111118377A - Hard alloy for producing 3D curved glass and preparation method thereof - Google Patents
Hard alloy for producing 3D curved glass and preparation method thereof Download PDFInfo
- Publication number
- CN111118377A CN111118377A CN202010035709.0A CN202010035709A CN111118377A CN 111118377 A CN111118377 A CN 111118377A CN 202010035709 A CN202010035709 A CN 202010035709A CN 111118377 A CN111118377 A CN 111118377A
- Authority
- CN
- China
- Prior art keywords
- percent
- carbide
- hard alloy
- producing
- tungsten carbide
- 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
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
Abstract
The invention discloses a hard alloy for producing 3D curved glass and a preparation method thereof, wherein the hard alloy comprises the following components in percentage by mass: tungsten carbide: 81 percent; cobalt: 3 percent; nickel: 8 percent; chromium carbide iii: 2 percent; vanadium: 1 percent; tantalum: 2 percent; titanium: 3 percent. The material has the characteristics of good wear resistance, strength and conductivity, strong corrosion resistance and excellent high-temperature strength in the working environment, can continuously work for more than 90 days, and greatly prolongs the service life.
Description
Technical Field
The invention relates to a hard alloy for producing 3D curved glass and a preparation method thereof.
Background
At present, the technology for manufacturing 3D curved glass is mainly a hot bending technology, namely glass is bent and molded under high pressure in a high-temperature melting state, and then is subjected to subsequent processing and polishing to form 3D glass, so that the 3D glass is widely applied to the fields of 5G mobile phone screens, rear covers, wearable equipment, automobile glass, optical glass and the like. The glass is in a high-temperature state during hot bending, and the glass has strong corrosiveness, so that the soaking plate material used is required to have corrosion resistance, high temperature resistance, high strength and wear resistance. The materials used in the existing market mainly comprise tungsten-cobalt hard alloy and metal ceramic, the hard alloy material has good high-temperature performance and good electric conductivity, but the wear resistance is greatly reduced in a corrosive environment, and the service life is not ideal; the metal ceramic has better oxidation resistance, corrosion resistance and wear resistance, but the material is too brittle and is easy to crack and break, so that the metal ceramic cannot be normally used.
The service life of the soaking plate materials provided by hard alloy manufacturers at home and abroad is greatly different, and the technical difference is that the cobalt content is different and is about 3-10%. The tungsten-cobalt hard alloy with high cobalt content has short service life, good alloy toughness and difficult fracture, but the production process level is relatively simple and easy to control, the yield is high, and domestic manufacturers are basically at the level of 8 percent of cobalt content; the main suppliers of tungsten-cobalt hard alloy with low cobalt content are imported manufacturers or Chinese and foreign joint-fund manufacturers, the cobalt content is about 3-6%, the service life of the tungsten-cobalt hard alloy is prolonged by 2-3 times compared with that of hard alloy materials with 8% or more of cobalt content, but the production process of the tungsten-cobalt hard alloy is strict, the product quality is not easy to control, the rejection rate is high, most of the manufacturers are reluctant to produce in consideration of economic benefits, or the production cost is high, so that the product price is high, and the market competitiveness is not provided.
Therefore, 3D glass vapor chamber materials used in the current market are mainly tungsten-cobalt-based hard alloys, and the quality difference of various manufacturers at home and abroad is mainly focused on the cobalt content of the hard alloys, so the difference is caused by the control difficulty of the production process, the control difficulty of the production process determines the qualification rate of products, and indirectly determines the price and market competitiveness of the products. Cermet materials are being phased out. Both the hard alloy material and the metal ceramic material can not meet the requirements of customers, especially the requirements of high-end customers, and the development of novel 3D glass soaking plate materials is imperative.
The working environment for producing the 3D glass soaking plate material is mainly in a high-temperature, high-pressure and corrosion-resistant state, the material is required to have the performances of corrosion resistance, high strength, good wear resistance and good conductivity, and the working temperature is 750-1150 ℃. Most of the products used in the market at present are tungsten-cobalt-based hard alloy materials, the low-end customers use metal ceramic materials, and the few high-end customers use soaking plate materials imported from Japan. The existing material has the defects of poor corrosion resistance, poor wear resistance, high brittleness, poor conductivity and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the hard alloy for producing the 3D curved glass, which has the characteristics of good wear resistance, strength and conductivity, strong corrosion resistance and excellent high-temperature strength in the working environment, and the material can continuously work for more than 90 days, so that the service life of the material is greatly prolonged.
In order to solve the technical problems, the technical scheme of the invention is as follows: the hard alloy for producing 3D curved glass comprises the following components in percentage by mass:
tungsten carbide: 81 percent;
cobalt: 3 percent;
nickel: 8 percent;
chromium carbide iii: 2 percent;
vanadium: 1 percent;
tantalum: 2 percent;
titanium: 3 percent.
The invention also provides a preparation method of the hard alloy for producing the 3D curved glass, which comprises the following steps:
firstly, preparing a part of tungsten carbide and titanium, vanadium and tantalum with corresponding mass percentages into compound carbide by a carbon tube furnace at 1850 ℃;
the compound carbide is prepared into compound carbide powder material through ball milling, crushing and sieving;
adding the rest tungsten carbide and the chromium tricarboxide with the corresponding mass percentage into the compound carbide powder material, discharging after ball milling, vacuum drying, and adding a forming agent to prepare powder material;
pressing the powder material into a plate on a press machine, and sintering at 1470 ℃ under vacuum and high temperature to obtain a blank material;
and processing the blank material into a finished product by a surface grinding machine.
Furthermore, the parallelism of the finished product is less than 0.005mm, and the roughness Ra is less than 0.003 mm.
Further, a part of tungsten carbide in the prepared double carbide is 42% of the whole tungsten carbide by mass.
After the technical scheme is adopted, nickel (Ni), chromium (Cr), vanadium (V) and WC materials have good acid corrosion resistance, tantalum (Ta) has good high-temperature red hardness and keeps higher material hardness at high temperature, carbide of titanium (Ti) has excellent crater resistance, pitting resistance and oxidation resistance, the corrosion resistance of cobalt is lower than that of nickel, but the material needs to keep good strength and toughness, and a thin cobalt layer which is uniformly dispersed in a re-sintering process can improve the wettability of WC, so that the integral strength of the alloy is provided, and the alloy properties of the hard alloy prepared by the invention are as follows: density: 13.1-13.5g/cm 3; hardness: HRA is more than or equal to 91.5; the bending strength is more than or equal to 2200 MPa; corrosion resistance: 0.00216 g/m2H (80% HCL, 100 ℃).
Detailed Description
The invention provides a hard alloy for producing 3D curved glass and a preparation method thereof, and a person skilled in the art can use the content for reference and appropriately improve the process parameters to realize the purpose. It is expressly intended that all such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the scope of the invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the methods and applications described herein, as well as other suitable variations and combinations, may be made to implement and use the techniques of this invention without departing from the spirit and scope of the invention.
The hard alloy for producing 3D curved glass comprises the following components in percentage by mass:
tungsten carbide: 81 percent;
cobalt: 3 percent;
nickel: 8 percent;
chromium carbide iii: 2 percent;
vanadium: 1 percent;
tantalum: 2 percent;
titanium: 3 percent.
The preparation method of the hard alloy for producing the 3D curved glass comprises the following steps:
preparing 42 percent of tungsten carbide and titanium, vanadium and tantalum with corresponding mass percent into compound carbide by a carbon tube furnace at 1850 ℃;
the compound carbide is prepared into compound carbide powder material through ball milling, crushing and sieving;
adding the rest tungsten carbide and chromium carbide in corresponding mass percent into the compound carbide powder material, adding anhydrous alcohol, wherein the amount of the anhydrous alcohol is 300 ml/kg, carrying out ball milling for 72 hours, then unloading, carrying out vacuum drying, adding a forming agent (the forming agent is 2.5 percent of the ball grinding material), and preparing into 100-mesh powder material;
pressing the powder material into a plate on a 160-ton press, and sintering at 1470 ℃ under vacuum and high temperature to obtain a blank material;
and processing the blank material into a finished product by a surface grinding machine.
Furthermore, the parallelism of the finished product is less than 0.005mm, and the roughness Ra is less than 0.003 mm.
In the embodiment of the invention, nickel (Ni), chromium (Cr), vanadium (V) and WC materials have good acid corrosion resistance, tantalum (Ta) has good high-temperature red hardness and keeps higher material hardness at high temperature, carbide of titanium (Ti) has excellent crater resistance, pitting resistance and oxidation resistance, cobalt has corrosion resistance lower than that of nickel, but the material needs to keep good strength and toughness, and a thin cobalt layer uniformly dispersed in a re-sintering process can improve the wettability of WC so as to provide the overall strength of the alloy, and the hard alloy prepared in the embodiment has the following alloy properties: density: 13.3g/cm 3; hardness: HRA 93; the bending strength is 2500 MPa; corrosion resistance: 0.00216 g/m2Hour (80% HCL, 100 ℃), meeting the design requirements.
The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The hard alloy for producing 3D curved glass is characterized by comprising the following components in percentage by mass:
tungsten carbide: 81 percent;
cobalt: 3 percent;
nickel: 8 percent;
chromium carbide iii: 2 percent;
vanadium: 1 percent;
tantalum: 2 percent;
titanium: 3 percent.
2. A method of making a cemented carbide for producing 3D curved glass according to claim 1, characterized in that the method comprises the steps of:
firstly, preparing a part of tungsten carbide and titanium, vanadium and tantalum with corresponding mass percentages into compound carbide by a carbon tube furnace at 1850 ℃;
the compound carbide is prepared into compound carbide powder material through ball milling, crushing and sieving;
adding the rest tungsten carbide and the chromium tricarboxide with the corresponding mass percentage into the compound carbide powder material, discharging after ball milling, vacuum drying, and adding a forming agent to prepare powder material;
pressing the powder material into a plate on a press machine, and sintering at 1470 ℃ under vacuum and high temperature to obtain a blank material;
and processing the blank material into a finished product by a surface grinding machine.
3. The production method according to claim 2,
the parallelism of the finished product is less than 0.005mm, and the roughness Ra is less than 0.003 mm.
4. The production method according to claim 2,
the mass of part of tungsten carbide in the prepared double carbide accounts for 42 percent of the total mass of the tungsten carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010035709.0A CN111118377A (en) | 2020-01-14 | 2020-01-14 | Hard alloy for producing 3D curved glass and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010035709.0A CN111118377A (en) | 2020-01-14 | 2020-01-14 | Hard alloy for producing 3D curved glass and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111118377A true CN111118377A (en) | 2020-05-08 |
Family
ID=70489121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010035709.0A Pending CN111118377A (en) | 2020-01-14 | 2020-01-14 | Hard alloy for producing 3D curved glass and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111118377A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657434A (en) * | 2022-03-25 | 2022-06-24 | 成都西顿硬质合金有限公司 | Hard alloy material and preparation method thereof |
-
2020
- 2020-01-14 CN CN202010035709.0A patent/CN111118377A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657434A (en) * | 2022-03-25 | 2022-06-24 | 成都西顿硬质合金有限公司 | Hard alloy material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102628138B (en) | Trace cobalt-containing tungsten carbide without bonding phase and preparation method thereof | |
| CN101560623B (en) | WC toughened and strengthened Ni3Al hard alloy and preparation method thereof | |
| CN101573193B (en) | Punch for cold forming operations | |
| CN109868404B (en) | Hard alloy shaft sleeve and preparation method thereof | |
| CN109867525A (en) | A kind of high-entropy alloy boride ceramics and its preparation method and application | |
| CN108642361B (en) | High-strength high-hardness ceramic material and production process thereof | |
| CN110358960B (en) | Preparation method of high-strength and high-toughness Ti (C, N) -based metal ceramic | |
| CN109136710B (en) | Hard alloy and preparation method thereof | |
| CN112680646B (en) | Preparation method of TiC-based metal ceramic with high-entropy alloy binder phase | |
| CN107245628B (en) | Make the cemented carbide material and preparation method thereof of Binder Phase using Ni-Cu continuous solid solution | |
| CN109868382A (en) | A kind of rare-earth element modified Mo2FeB2Based ceramic metal and preparation method thereof | |
| CN112831710A (en) | Superhard wear-resistant high-entropy alloy and preparation method thereof | |
| CN111349839A (en) | Whisker toughened FCC (fluid catalytic cracking) high-entropy alloy composite material and preparation method thereof | |
| CN112662930A (en) | High-entropy die steel material and preparation method thereof | |
| CN114645171B (en) | Multi-principal-element alloy-diamond grinding tool material and preparation method and application thereof | |
| CN110499442B (en) | High-strength corrosion-resistant Cr3C2Light metal ceramic alloy and preparation method thereof | |
| CN111118377A (en) | Hard alloy for producing 3D curved glass and preparation method thereof | |
| CN109053191B (en) | Titanium carbonitride based cermet without binder phase and preparation method thereof | |
| CN104388798B (en) | A kind of WC system steel bonded carbide | |
| CN114833342B (en) | Powder metallurgy wear-resistant high-toughness die steel and processing technology thereof | |
| CN110064760A (en) | A kind of preparation process of NC cutting tool cermet material | |
| CN111621685B (en) | Corrosion-resistant hard alloy with double-crystal structure and preparation method thereof | |
| CN113523719B (en) | Machining process of helical blade | |
| CN114833340B (en) | Preparation method of Damascus steel | |
| CN115044815A (en) | Cobalt-free titanium-based metal ceramic with multi-hard-phase structure and 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: 20200508 |
|
| RJ01 | Rejection of invention patent application after publication |