Fastener Knowledge

High-strength fasteners for new energy energy storage, wind power and heavy industry equipment require strict mechanical properties, fatigue resistance and low-temperature toughness. This article explains the differences between grade 8.8/10.9/12.9 high-strength bolts, matches suitable models for wind tower, energy storage PACK and heavy-duty frame working conditions, summarizes selection mistakes

Introduce complete pre-plating, main plating and passivation process of zinc-nickel coating for grade 10.9/12.9 battery pack bolts. Compare salt spray and hydrogen embrittlement resistance of electro-galvanized, mechanical galvanized and zinc-nickel coatings. Define coating thickness standards for inland and coastal energy storage projects, analyze coating peeling, black spot and hydrogen embrittl

Analyze hydrogen embrittlement cracking causes of grade 10.9/12.9 high-strength bolts for energy storage and power battery packs. Specify baking temperature and holding time for coated bolts according to GB/T 3098.1. Introduce full-process hydrogen control procedures and crack detection methods to eliminate delayed fracture risks after battery pack assembly.

Pre-treatment, alloy electroplating, sealing passivation and hydrogen embrittlement testing procedures are fully cited from GB/T10125 zinc-nickel alloy plating standard, targeting M4-M8 sealing screws for power battery housing. Distinguish process parameters of two coating types with 12% and 15% nickel content, summarize rectification plans for three mass production defects: coating peeling, hydro

This guide introduces matching rules, assembly methods, installation points and taboos of GB bolts, nuts, flat washers and spring washers for standard hardware selection.

This article explains the core heat treatment process for high-strength fasteners, including principles, procedures and its effect on improving mechanical properties.

This article explains the core heat treatment process for high-strength fasteners, including principles, procedures and its effect on improving mechanical properties.

Analyze rust causes of stainless steel fasteners and introduce practical anti-corrosion methods in production,storage and installation.

This article elaborates on the process principle, film parameters, advantages and differences of zinc phosphating and manganese phosphating, compares galvanizing and blackening processes, and provides selection standards for automotive and mechanical high-strength bolts.

Compare six core performances of carbon steel and stainless steel fasteners, attach complete selection comparison table, clarify material selection rules for machinery, outdoor, chemical and vibration working scenes.

This article deeply analyzes the microscopic mechanism of bolt fatigue fracture, distinguishes vibration fatigue, stress fatigue and installation fatigue failure modes, and provides comprehensive improvement schemes from assembly, material selection, structure and operation maintenance.

Detailed selection table for bicycle fasteners, including specifications, materials, surface treatments and anti-loosening solutions for road bike, mountain bike, e-bike and folding bike.

Jiali Hardware provides one-stop bicycle fastener solutions for road, mountain, e-bike and folding bikes, including titanium alloy, stainless steel and anti-loosening screws for frame, brake, wheel and transmission.

Explain torque calculation, wrench calibration and on-site testing methods for high-strength bolts, analyze risks caused by torque deviation, and provide safety fastening and re-inspection standards.

Explain torque calculation, wrench calibration and on-site testing methods for high-strength bolts, analyze risks caused by torque deviation, and provide safety fastening and re-inspection standards.