Pressure Casting Casting for reducing the amount of rough machining, precision casting blank so
close to finished parts forming titanium whole distributor method is the most promising, especially as titanium and titanium
alloys such difficult and expensive metal processing. In the early stages of development of titanium
alloy precision casting someone want to use this method to produce titanium alloy precision
castings, but due to time limitations and conditions of the technical level, so that this idea can
not be achieved. After casting titanium researchers decades of effort, the former Soviet Union in
the study of titanium pressure casting process aspect has solved some problems: in the press to
establish a vacuum device (vacuum casting chamber and vacuum casting chamber); find some possible
type casting and die casting machine for casting a new high-temperature components heat-resistant
material; successful research can ensure that there must superheat and batch ingredients accurately
special metal smelting processes.
Good melting of titanium with a certain degree of superheat liquid by turning the crucible, casting
by pouring cup was sent to the room, under the effect of pressure die-casting rod, casting type
liquid titanium into the cavity from the casting room, die casting good at casting type inner
packing, cooling, and then removed. To eliminate casting surface may produce cold traps, flow marks
or other defects due to cast, surgical implant titanium especially the thin edge. Die-casting should be preceded by the type
of warm-up.
Arc melting is used as a heating source, in addition, a vacuum may also be used in induction
heating, electron beam heating, or the suspension smelting.
Heat-resistant steel casting-type material used in severe erosion by liquid titanium molybdenum or
special places may be inlaid graphite block. Casting chamber die casting machine uses heat-resistant
alloy. Pressing the piston head with a molybdenum alloy or heat-resistant alloy. Type casting
surface roughness should not be less than Ra≈0.6μm, otherwise, it should affect the surface
quality precision castings. titanium sheet To improve the life of the mold and die casting part, a lubricant may be
sprayed on their work surface.
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