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06-14 2026
Hardness Testing For Welded Parts: What QC Labs Should Check Before Delivery
Welded parts require hardness testing before delivery to verify weld metal, heat-affected zone, base metal, post-weld heat treatment results, and potential brittle or softened areas. A reliable QC process should include correct test method selection, sample preparation, Vickers or Micro Vickers test path planning, calibration verification, and clear inspection reports.
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06-13 2026
How To Set Up Incoming Material Hardness Inspection For Metal Processing Factories
Incoming material hardness inspection helps metal processing factories verify raw material quality before machining, forming, welding, heat treatment, or shipment. A practical inspection process should include material identification, sampling rules, hardness method selection, calibration blocks, test location control, surface preparation, batch records, and clear acceptance criteria.
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06-12 2026
Hardness Testing Equipment For Fastener Manufacturers: Bolts, Screws And Precision Pins
Fastener manufacturers need reliable hardness testing equipment to verify bolts, screws, studs, nuts, washers, rivets, precision pins, and heat-treated small metal parts. A complete fastener hardness testing solution should consider material grade, heat treatment process, test scale, sample size, surface condition, small-part fixture, calibration blocks, and batch inspection reports.
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06-11 2026
Why Metal Parts Fail Customer Inspection Even When Hardness Looks Correct
Metal parts may still fail customer inspection even when the hardness value appears to meet specification. Common causes include wrong test location, inconsistent testing method, poor calibration records, unstable sample support, incomplete case depth testing, surface hardness without core hardness verification, batch variation, poor sample preparation, and unclear QC reports.
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06-10 2026
Hardness Testing For Heat-Treated Gears: Surface Hardness, Core Hardness And Case Depth
Heat-treated gears require reliable hardness testing to verify wear resistance, tooth strength, fatigue performance, and long-term service life. A complete gear hardness testing solution should check surface hardness, core hardness, effective case depth, hardness profile, sample preparation quality, calibration records, and final QC reports.
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06-07 2026
Micro Vickers Hardness Tester RFQ Checklist for QC Labs
A practical RFQ checklist for QC labs sourcing Micro Vickers hardness testers, automatic hardness testing systems, metallographic preparation equipment and calibration accessories.
