Dongguan Precision CastingIt is more and more widespread in our daily life, so how do we advance the quality of precision casting castings?

The following methods to share the quality of advance precision castings are as follows:

Method 1: Process planning: Strictly control the process. Before closing the box, ensure that the appearance and sand core are at a temperature. Ensure the fluidity of molten steel during pouring. For locals with rough and damaged surfaces, choose Foseco ISOMOL300 alcohol-based powder coating. Burn and bake after brushing to make the surface of the mold smooth.

Method 2: Mold planning: The surface treatment of stainless steel castings starts with the mold first. Clean the surface of the mold, that is, clean the surface with sandpaper and brush with nitro paint. For high-precision castings, choose metal or plastic molds and move on to the mold surface. The finish.

Method 3: Fillet planning: In order to prevent white mouths from being cast when stainless steel is cast, in addition to technical methods, it is necessary to make the wall thickness not too thin. When the wall thickness is more than 15mm,Dongguan Precision CastingIt is necessary to use round corners at the corners of castings with metal molds;

Method 4: Wall thickness planning: Because metal molds dissipate heat quickly, the minimum wall thickness of stainless steel casting should be larger than that of sand casting castings. The minimum wall thickness of various casting alloys and different sizes of castings; Method 5: Polishing planning: In the polishing process, the flash and burrs are removed, and the uneven surface is polished to make it smooth. Regarding the heat-treated castings, the steel shot size is planned to be 0.85~1.4mm, the hardness is HRC40-50, and the maximum hardness error is HRC3.0.

Method 6: Material planning: start with the raw materials, use wrong sand resin sand for appearance and core making, mesh number 75-150, use thermosetting resin,Lost wax castingThe mixed sand has high refractoriness, smooth surface, good dispersibility, and easy sand falling.