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The two-day seminar on China's superhard materials industry technology development forum was successfully completed. Entrusted by the conference organizer, I will represent the expert technical committee as the final speech of the technical seminar.
First of all, on behalf of the organizers of the conference, the Superhard Materials Association and the National Superhard Materials Industry Base, I would like to express my gratitude to the comrades and friends who have come to the meeting all over the country! I would like to express my deep gratitude to the units and individuals who have given assistance and support to the convening of this meeting! I also invite representatives who are here to allow me to express my heartfelt thanks to all the members of the conference meeting group for the hard work of the conference!
Let me briefly talk about your personal feelings for your own participation.
Consistent pursuit and new highlights:
1. Consistently pursuing 1 The production of super-hard materials (diamond, CBN, including PCD, PDC, PCBN) revolves around the large-scale production equipment, the refinement of equipment control, the quality upgrade of raw and auxiliary materials and the in-depth quantification of R&D work. It is particularly worth mentioning that the development of high-performance, low-cost raw materials and products is effective.
2 Diamond tool (product) production The development of low-cost, high-performance tools is a consistent theme. For example, the large-area promotion of Fe-based binders, the Fe content of stone tools is up to 80%, and the use effect has been accepted by the market. In the ceramic materials, glass processing tools, concrete processing tools, the market share of low Co, Ni or Co-free, Ni-free tool binders has gradually increased.
In the past two or three years, the development of ultra-thin diamond tools for information technology has been strong.
People's understanding and evaluation of pre-alloyed powders are gradually defined and increased, the amount of use is increased, and the milling process and method can be changed according to the requirements of tool manufacturing. Manufacturers have a greater choice. The rational use of elemental powder and prealloyed powder is more and more mastered by more people, and so on, the time relationship is not repeated.
But there is a problem I want to leave to the comrades who are engaged in tools:
Which or which mechanical properties of the metal bond are the main indicators determining the performance of the diamond tool? This determines the development of our tools, otherwise it will enter a misunderstanding. Which of the traditional sayings has scientific basis, needs to be adhered to, and which statements have not been proven to be the most important, then re-select!
Second, the exciting highlights 1. In the material system 1 Combination top hammer design The purpose of reducing the weight and cost of the top hammer, improving the life of the hammer and greatly reducing the consumption of the top hammer is expected to be realized soon.
2 Two-sided top technology has been carried out in a reasonable transplant of six-sided tops for several years in China, including catalysts, components, heating methods, etc., using existing top presses, designing the shape and size of the hammer through the process and cavity. Improved design has made gratifying progress. The quality of synthetic diamonds with this design has been significantly improved. Attract people's attention.
3 Safe and reasonable upgrade of small and medium-sized synthetic diamond presses Based on the existing small and medium-sized presses, a small amount of funds can be invested for safe and reasonable transformation, which can expand the cavity production, for example, the 460-bore diameter becomes 500-bore diameter, and the 500-bore diameter becomes 560. Bore diameter and so on.
2. The following aspects of the tool system may become a bright spot. 1 Mechanical alloying powder Laboratory research has achieved significant results. This is a difficult subject, and it is still necessary to solve the safety problems in the process of commercial production, transportation and use.
2 Coprecipitated powder The coprecipitated powder is a liquid phase precipitation method for preparing a composite powder. The same is the co-precipitation method, there are two methods commonly used, there are mixed powder, coated powder. Users can choose according to the requirements.
3 Reasonable use of low-cost low-melting metals will be a convenient step for the rapid application of Fe-based binders. This issue is very extensive and will be discussed later.
4 Replacement of precious metals such as Co, Ni, WC, etc. by various channels The substitution methods are various, for example, by introducing additives, prealloyed powders, premixed gold powders, and the like. A certain effect has been achieved.
5 Infiltration Process for Producing Diamond Tools Compared with solid-phase sintered diamond tools, the most important feature of impregnated diamond tools produced by infiltration is that diamonds are tightly packed. It also saves mold and is low cost (compared to single-layer brazing) and is more popular.
All of the above have been pre-worked and have a good momentum. And some are coming or already on the market.
During the exchanges and discussions at the conference, the delegates talked about many valuable experiences on the issues of concern and the results of their own research and development work, and also put forward some valuable suggestions for the development of the industry. .
The above is just a personal opinion and is for reference only.
If you want to meet each other and feel short-lived, let us say goodbye to each other and wish everyone a smooth return. Let us look forward to the next year (45th anniversary) and return to the Central Plains!
Dear delegates, colleagues, gentlemen, ladies: