Vacuum brazing process

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Vacuum brazing production technology is the technical software to make the super hard abrasive brazing tools. There are six processes including product preparation, pre-processing, sanding and powdering, firing, post-processing and packaging and storage.

Product preparation process
Product preparation process work content mainly includes: matrix design and processing, abrasive selection, sanding tooling design, brazing material selection and packaging design and processing.
Product preparation brazing is one of the most onerous work, must fully understand how to do it well the use of abrasive tools for customer conditions (speed, feed speed and walking speed, processing object characteristics, processing surface quality and tool connection method, etc.), and combining with the characteristics of vacuum brazing, choose good abrasive and soldering material, good design and processing base, sand on tooling and packaging forms.

Preprocessing process
The work contents of the pre-treatment process mainly include: finishing of upper sand base, cleaning of matrix, cleaning of abrasive, mixing of abrasive, making of upper sand tooling and size screening of brazing solder, etc.
Pretreatment is the most meticulous work of brazing operators, which can be said to have completed 50% of the work, laying a foundation for the production of brazing abrasive tools. The principle of doing this work well is: all the work pieces to be done (matrix, abrasive, etc.) are clean and dust-free, the upper sand base is active, the upper sand tooling is handy, the brazing particle size is even.

Sanding and silting process
On sand on powder working procedure work content mainly includes: on sand and on powder (brazing material) and so on.
On sand on powder working procedure is the most burdensome work of brazing workers, the work workload is relatively large, the principle of doing this work is: in strict accordance with the work on sand cloth, abrasive tightly adhere to the matrix contour, the brazing can not be blank coating.

Firing process
The working contents of firing process mainly include: pre-firing shaping, workpiece placement and vacuum firing, etc.
The firing process is one of the most careful work for brazing operators. To do this work well, we must know how to establish the vacuum and how the temperature changes in the furnace heat field. The principle of doing this work well is: there can be no solder in the non-welding place, the workpiece should be placed in the furnace, in strict accordance with the vacuum firing process.

Post-processing process
The working contents of the post-processing process mainly include: shape dressing, dynamic balance, beautification and finishing, etc.
The post-processing process is the most serious work of brazing operators. The principles of doing this work well are: removing high points, balancing vibration and beautifying tools.

Packaging warehousing process
The working contents of packaging and storage process mainly include: packaging and storage, etc.
Packaging and storage process is the most successful brazing operators work, the principle of doing this work is: protect the brazing tools, convenient transportation.

From the top, superhard abrasive vacuum brazing tool technology is a green manufacturing mode technology, with the traditional sintering process production of multilayer superhard abrasive tools and the rule of law as a single electroplating superhard abrasive tools, compared to vacuum brazing legal system for superhard abrasive tools in save resources, reduce pollution, protect the environment, and realize green machining has obvious advantages in aspects and so on. With more than ten years of development and improvement, the technology of superhard abrasive vacuum brazing tool has become mature. It can be predicted that with the development of the current environmental economy, the vacuum manufacturing technology of super hard abrasive brazing tools will definitely form a new development force in the super hard abrasive tools industry and enrich and further prosper the super hard abrasive tools industry in China.

Classification of diamond tools
According to different manufacturing methods, diamond tools can be divided into the following categories:
Natural single crystal diamond tools
Synthetic diamond tools

Learn More : Diamond Vacuum Brazing Furnace

Development and status of natural diamond tools
Natural diamond with high hardness, wear resistance, small friction coefficient, good thermal conductivity and other excellent characteristics, is the manufacture of cutting non-ferrous metal and non-metallic material tool ideal material, the use of natural single crystal gold cutting tool for cutting precision ultra-precision parts, since the late 1950s.

Later development required processing aspheric surface mirror, and then development required processing large mirror. High shape accuracy and small surface roughness are required.

At present, the use of natural single crystal diamond tool already quite mature, but because of its low yield, expensive, and the emergence of artificial diamond, natural single crystal diamond tool usage increase trend in the field of precision machining has subsided, several kinds of synthetic diamond with its good price performance ratio and the use of gradually mature technology, has gradually occupied the precision machining market demand is relatively low.