Examples of using Sintering method in English and their translations into Polish
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Ceramic sintering method twice.
Activated liquid phase sintering method;
The use of high-temperature sintering method of manufacturing the material relatively high density, good overall performance.
High temperature liquid sintering method.
The name suggests, a direct sintering method, after forming the desired composition of the mixed powder of tungsten and copper repression directly sintered product.
Ultrafine/ nano-alloy powder sintering method directly;
The method of preparation is mainly divided into two categories:infiltration and direct sintering method.
Existing tungsten copper sheet sintering method include the following: 1.
And then produce the W/Cu composite material by Compression Molding and Powder Injection Molding sintering method.
Tungsten concentrate soda sintering method Grind tungsten concentrate to pass 180mesh sieving, add soda, niter in a certain ratio and put into sintering furnace.
Generally, the preparation methods of nickel based tungsten carbide powder are atomization, mechanical mixing, and sintering method.
Mixed powder sintering method is based on the required ingredients mixed molybdenum-copper alloy molybdenum powder and copper powder, and then molding, sintering directly into products.
If tungsten oxide photocatalyst prepared from ammonium paratungstate(APT) as the raw material through solid phase and sintering method, it made up of monoclinic phase primarily;
However, activation of liquid phase sintering method to obtain the desired relative density, hardness, tensile strength, such as sintering performance good, but unfortunately, the impact of adding activator with high conductivity copper electrical conductivity, thermal conductivity, thermal conductivity significantly reduces the composite, conductivity, thermal conductivity which is high demand for electronic packaging sheet material is unfavorable, the material prepared by this method can only be applied with the guide to provoke less demanding areas.
The oxygen content of the tungsten and copper material is very low, high purity,high temperature sintering method suitable for manufacture of the mass fraction of copper is not greater than 15% of the tungsten and copper material.
Depending on the mixed powder preparation method used, mainly mixed oxide, restore law and mechanical alloying process; powder particle size and mechanical alloy powder is divided into general mechanical alloying powder and mechanical alloying nano powder; addition there,the liquid phase activated sintering method.
Tungsten, copper mutually insoluble tungsten-copper alloy powder metallurgy manufacturing process,commonly used methods can only be used ordinary sintering method and the melt infiltration process, but the system is more difficult to take the high relative density of copper tungsten alloy.
Overall, the production of high-temperature liquid phase sintering process is simple, but has a high sintering temperature, sintering time is long, a large number of volatile copper, poor sintering performance, lower sintered density and other shortcomings,so the high-temperature liquid phase sintering method can not prepare high density of tungsten copper composite material, if after assisted sintering process makes the process complicated and costly.
Omm thickness of choice, inventors have found that a large number of experimental studies, within the scope of this particular choice,the alloy used to prepare raw slab of tungsten copper alloy sheet, with the sintering method The other conditions are very conducive to the discharge of copper phase diffusion and sintering pores and directly simplify subsequent processing procedures sintering methods. .
Various methods to the production of tungsten copper materials, copper distribution along the tungsten grain boundaries,the tungsten skeleton strength is not as good as the high-temperature sintering method, as this method of asking too much of raw materials, ingredients, or the product will contain more impurities and gases.