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Bed casting

Bed castings are mainly used as blanks for machine parts, and some precision castings can also be used directly as machine parts. Castings account for a large proportion of mechanical products. For example, in tractors, the weight of castings accounts for 50-70% of the weight of the whole machine.

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Large Casting Series

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Product description

Bed casting

description:

Bed castings are mainly used as blanks for machine parts, and some precision castings can also be used directly as machine parts. Castings account for a large proportion of mechanical products. For example, in tractors, the weight of castings accounts for 50-70% of the weight of the whole machine.

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Machine bed, machine tool casting, large machine tool casting

Bed castings

Bed castings are mainly used as blanks for machine parts, and some precision castings can also be used directly as machine parts. Castings account for a large proportion in mechanical products. For example, in tractors, the weight of castings accounts for 50-70% of the weight of the whole machine, 40-70% of agricultural machinery, and 70-90% of machine tools and internal combustion engines. Among all kinds of castings, there are many kinds of castings for machinery, the shape is complicated, and the amount is also large, accounting for about 60% of the total output of castings. Followed by metal ingot molds for metallurgy and engineering pipes.

The non-machined surface and appearance quality of castings have an impact on the commercial properties of castings, including:

(1) Surface roughness (increased box, collapsed and sanded);

(2) Surface or lumen cleanliness (sand, sticky "paint layer");

(3) Flatness deviation (non-machined surface undulations);

(4) Surface roughness;

(5) Contour definition (contour definition of structural units such as bosses and umbilicals, which are evaluated by the naked eye).

Machine tool casting requirements for lost foam:

(1) Coating requirements: Water-based graphite coatings are used, with a Baume degree of 60-70. When painting, it is in the greenhouse, and it is strictly prohibited to move before drying to prevent deformation.

(2) Brushing requirements: The paint is evenly mixed, and the brush is strictly white.

(3) Coating drying: After the coating is dry, it must have sufficient strength to dry at 50-60 ° C for 24 h.