loading
13.4
12.5 x 9.5 x 5.9
Ferrous Based Metal Powder
Gun
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Product Description
Unit Weight (g): 13.4
Dimensions(mm): 12.5 x 9.5 x 5.9
Material: Ferrous Based Metal Powder
Application: Gun
Component Type: Structural Part
Considering relatively complicated machining of supporting parts, relatively high processing cost and low utilization rate of materials, the machinery industry has developed many applications in recent years, and the products include special milling cutter, cutting tools, fasteners, micro-gear, and parts of cotton loosening machine/ textile machine /curing machine, etc.
Molding starts with the closure of the mold cavity. The molding machine nozzle is seated into the sprue bushing. After contact, a premeasured quantity of molten feedstock is forced into the cavity. Pressure is sustained on the cooling feedstock until the gate freezes, and after complete cooling the component is ejected. Between the time when the gate freezes and the part is ejected while it is still cooling, the screw is turning to plasticize and meter the next shot of hot feedstock.
The pressure in the molding cavity increases rapidly as the molten feedstock enters the cavity and that pressure is held until the gate freezes. Once the gate has frozen the molding machine no longer controls the cavity pressure. Cavity pressure determines the final part mass and dimensions. A shot-to-shot mass variation is a means to monitor the success of proper control.
After mold filling, as the feedstock cools, a natural pressure reduction occurs due to binder thermal contraction. At the point of ejection the residual pressure in the cavity should be very low. Otherwise, the component will stick in the mold cavity. For ejection, pins move from flush positions on the tool walls and push the component from the cavity.
Robots are often used to automate part removal from the mold/press. Modern molding machines integrate the robot control and coordination with the molding cycle. Mass and/or sizes are monitored after molding to ensure proper quality.
● Are MIM parts porous?
Due to the nature of the MIM process, there will be some porosity left in the component after the sintering stage, however, what porosity is left will be very fine and isolated, giving density in the region of 95-98%. Even machining or casting will not give 100% dense parts as there will often be inclusions.
● Is there a rule for defining complexity?
There is nothing right or wrong here. As a thumb rule, if a drawing has more than 20 dimensions it may be a good part for MIM. MIMO can also make products with simple structure, but what MIMO wants to emphasize is that the more complex the products, the more prominent the advantages of MIM technology.
● Are MIM parts porous?
Due to the nature of the MIM process, there will be some porosity left in the component after the sintering stage, however, what porosity is left will be very fine and isolated, giving density in the region of 95-98%. Even machining or casting will not give 100% dense parts as there will often be inclusions.
● What will be the density and strength of the MIM parts?
Typical MIM densities achieved areis above 98% of theoretical. Properties vary depending upon the alloy chosen however they will be similar to wrought material.
● Is there any difference between MIM and normal powder metallurgy?
Traditional PM presses rough powder into a fixed position by one-way high pressure, creating moderately complex equipment. Particularly, if we do nothing to improve its density in the process of sintering, density value between 80-90%, it will limit its physical properties as alloy. Due to the elasticity of MIM, it will not bring into any restriction to manufacturing complex products. Fine metal powder and high temperature sintering make final products produced by MIM achieve high density. This also makes MIM products have similar features with precision materials.
