Under the premise of ensuring the working performance of the castings, the structure of the castings should satisfy the following two requirements as much as possible.
1 Casting cast iron platform , inspection platform and inspection platform should be as simple as possible.
2 Castings should not easily form defects during the forming process.
In order to simplify the process requirements for investment casting structure
1 Casting cast iron platform , testing platform and inspection platform The diameter of casting TL should not be too small or too deep. The casting groove should not be too narrow or too deep, so that the coating and sand can smoothly fill the corresponding 7L groove on the welding mold. As much as possible, avoid the use of ceramic cores, and also simplify the cleaning of castings. It is generally desirable to cast 7L diameters greater than 2 mm . When casting through holes, the maximum ratio of 7L deep A to 7L diameter J is A/J = 4-6E when casting blind holes, A/J , 2* .
2 The inner glue and ZL wall of the casting should be as straight as possible so that the corresponding core cavity on the mold can be directly formed using the metal core on the music type. There should be no closed cavities on the casting.
3 Due to the hot casting during investment casting, the effect of cold iron is weakened, and the fixing of cold iron on the shell is also more troublesome. Therefore, the distribution of investment castings should meet the requirements of sequential solidification as much as possible, without dispersing. The hot section is used to feed with a straight bypass.
4 The shape of the casting should be favorable for the injection mold to be easily taken out from the pressing type, which is conducive to the simplification of the parting surface, and the melting mold is formed in a pressing cavity as much as possible to simplify the structure of the pressing type and the operation during molding. . Http://
Production name
High quality Die cutting heat resistant adhesive polyimide masking tape
Material
Polyimide film + Silicone adhesive
Usage
widely widely used in high temperature masking protection in electronics industry
Feature
♦Powder coating protection
♦Glass sandblasting protection
♦Paint spray protection
♦Ordinary surface protection
♦ Silicone Adhesive Heat Resistant High Temperature Polyimide Tape
♦ High temperature, solvent resistant, stable and reliable
♦ Easy peel off no glue residue
♦ H-class insulation
♦ Suitable for pcb 3d printing and transformer insulation
♦ Strong tensile strength
♦ Offer sheet or roll material or diecut processing.
Advantage
1.Factory supplier: Silicone Adhesive Heat Resistant High Temperature Polyimide Tape
2.Competitive price:Factory direct sales, professional production, quality assurance,
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