One kind may on basic solve the mould pulling injury problem and largely enhance the mould life surface treatment technology TD multiple coat processing
The TD multiple coat processing technology is thermal-diffusion meter carbide multiple coat processing (Thermal Diffision Carbide Coating Process) abbreviation.

Its principle is puts in the work piece in the special medium, through the high temperature diffusion, forms a layer in the work piece surface micro not to dozens of microns metals carbides multiple coat, this multiple coat high has degree of hardness (HV to be possible to reach about 3200), compact smooth, with the substrate metallurgy union, has extremely high is wear-resisting, the anti- linking, resists corrosion and so on the performance. In addition, this technology may carry on to the work piece duplicates many times processes. The practice indicated that, the TD multiple coat processing technology is the solution extends curving, of the same kind takes shape the mould pulling injury work piece question economy but the effect best method, may enhance the labor mould life several fold to dozens of times, has the extremely high use value.

Although the surface treatment technology flourishes more and more daily, but many years application experience proved that, in many domains, must surmount its application effect is very difficult.
The TD multiple coat processing technology is long Saudi Arabia bears the metal material science and technology limited company more than ten year scientific research and the production practice crystallization, in profession the and so on automobile, electrical appliances, tube making, hardware, metallurgy extension (drawing, stretch), has been curving, the flange, the thin steel plate rolls takes shape, on Leng Dui, the blanking, the powder metallurgy of the same kind mould has obtained the extremely successful application, either on basic has solved the work piece pulling injury problem, either enhanced the labor mould service life several times to several dozens time of places, either has substituted the hard alloy, either has substituted the import, has obtained the good society and the economic efficiency.