Manufacturing & Quality
Quality Assurance
Quality is life. There is a strict quality control system in the company ,which includes strict control and inspection for every production step. The company has obtained certificates of…
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Manufacturing & Quality
Casting Tolerances and Design
Casting Tolerances and Design: product information, component options and available specifications.
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Manufacturing & Quality
Lost Wax Casting Process
Lost Wax Casting Process: product information, component options and available specifications.
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Casting Questions and Answers
How do we work together? We need to know your detail requirement of products, and we normally demand drawing or sample, we will revert to you with a solution.
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Die and Tool Making
We have a die workshop which specialized in designing and manufacturing precision casing die. The die workshop owns advanced equipments such as CNC lathe, CNC electric discharge machine,…
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Silica Sol and Soluble Glass Castings
We produce Invest castings for the following industries:
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Linear Tolerances
the Dana design guide lists normal and premium linear tolerances by component dimension. The first twelve rows use millimetres; the final row uses percentages.
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Cast Holes and Slots
the chart gives limiting length-to-diameter ratios for two illustrated casting geometries. Refer to the diagram for the L and ΦD dimensions.
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Angular Tolerances
Three angle configurations, labelled a, b and c in the diagram, have separate normal and premium tolerance values.
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Flatness, Straightness and Roundness
the chart lists normal and premium values for flatness, straightness and roundness over four dimension ranges.
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Surface Roughness and Finishing
the guide distinguishes rough castings from finished castings and lists surface-treatment options by steel family. Roughness values are Ra in micrometres (μm).
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