Model No.: oem
Materials: gray iron, ductile iron, carbon steel, stainless steel, alloy steel
Standard: ASTM, JIS, BS, DIN, EN, ISO TS16949
Operation: green Sand casting and resin sand casting
Surface finish: sand blasting, sand blasting, oiled, zinc, nickel, chrome plating, painting, hot dip galvanized and powder coating
Available processes: CAD/CAM service, metal processing, finishes and heat treatment
Product weight: 0.5 to 300kg
Precision machining: CNC lathes, milling, drilling, planning, grinding machines and test facility
Chemical composition controlled by spectrometer
OEM orders are welcome, will make various castings as per customer's drawings or samples
Detailed products range: pipes and its fittings, grating, frame, manhole covers, pump parts, handwheel, valve, flange, bollard, piling accessories, counter weight iron, construction machinery parts and other industry machinery parts
1 Standard Linear Tolerance(mm)
As-cast tolerances of angles is mainly a function of the part design and their ocation in casting. They range from +/- 1/2 degree (considered minimum) for well supported positions to +/- 2 degree where existing distortion could be expected. Inclusion of gussets and ribs normally minimizes distortion and many sections can be mechanically straightened.
3 Flatness, Strengteness and Roundness
|Section Thickness||Possible Thickness Section Sink per Face of Casting|
|Up to 25||0.20||0.10|
|25 to 50||0.40||0.20|
|50 to 100||0.60||0.30|
|100 to 150||0.80||0.40|
Straightening adds cost, but sometimes cannot be avoided. The actual straightening costs are often dependent on the tightness of the tolerance specified, so do not specify tighter flatness, straightness, roundness, or other requirements than you actually require. (WOTECH typically straightens parts using die sets that will be included in your tooling price.)
4 Size and Weight Range
Size and Weight. Part size and weight are the most critical factors in determining part cost because mold capacity is limited by both size and weight. The more pieces that can run on a mold, the lower the part cost. Unnecessary mass should always be removed by correct engineering practices to reduce part weight.
|Outline Dimention||1000×620×380||up to 100|
|Weight(kgs)||0.001-60||0.10 to 1.50|
|Min. Wall Thickness||0.50||5 to 10|
5 Surface Roughness
80 to 120 RMS are average.
6 Hole Length
Making a good hole in a casting is dependent on the integrity of the shell. The ratio of holediameter to length is important in determining what can be offered. Blind holes must have aradius at the top and the bottom of the hole to insure that a strong core is built for castingpurposes and to insure the best possible casting.
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