Casting Defects Guide: Porosity, Shrinkage, Cold Shut & Fixes

Casting Defects Guide: Porosity, Shrinkage, Cold Shut & Fixes

Short answer: Casting defects — gas porosity from trapped air or moisture, shrinkage cavities from inadequate feeding, cold shuts from metal that met too cold to fuse, and sand or oxide inclusions from contaminated moulds or melt — are the main yield and quality risks in sand, permanent-mould and die casting. They are controlled by sound gating and risering, correct pour temperature and venting, clean melt practice and proper mould preparation, with critical parts verified by X-ray or other NDT and documented per the casting specification.

At a Glance

Casting Defects Guide: Porosity, Shrinkage, Cold Shut & Fixes chart
Figure 1 – Casting Defects Guide: Porosity, Shrinkage, Cold Shut & Fixes overview.

Defect Causes & Fixes

Relate to Metal Sand Casting Guide 그리고 Metal Permanent Mold Casting Guide; compare Metal Die Casting Guide 그리고 Aluminum Die Casting Guide.

품질

Internal soundness checked by Metal Ndt Guide, certified by Mill Test Certificate Guide. Relate to Metal Cast Iron Guide.

Supply & QA

Design for feed via Metal Powder Metallurgy Guide; protect via How To Prevent Metal Rust. HXSCO supplies casting-grade ingot and melt stock.

Get a Quote

Tell HXSCO your requirements and we will respond with a competitive quote and lead time.

자주 묻는 질문

What causes casting porosity?

Trapped gas or moisture; improve venting and dry melt.

What is shrinkage cavity?

Unfed solidification; add risers and chills.

What is a cold shut?

Cold metal that failed to fuse; raise pour temperature.

How are defects found?

X-ray, dye-penetrant or ultrasound NDT on critical parts.

Do you supply cast stock?

HXSCO supplies ingot and melt stock for clean castings.

Source Casting-Grade Metal from HXSCO

HXSCO supplies aluminium, zinc and iron casting-grade ingot and melt stock for low-defect castings. Send your alloy and quantity for a quote.

Request a Quote

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