Detailed Introduction

This automotive power distribution component line uses two core high-temperature engineering plastics to adapt different vehicle working conditions.

LCP material features ultra-low thermal expansion and high-frequency insulation performance, applied to compact dense-grid junction cores inside engine compartments to avoid terminal displacement under long-term high-temperature working environment. V0 flame-retardant glass-filled PBT has excellent mechanical rigidity and anti-flashover performance, suitable for large-capacity fuse boxes and external sealed wire connectors that bear fuse heating and circuit overload risks.

The product range covers full plastic fuse box housings, multi-layer grid distribution inner cores, long strip dense pin junction blocks and fully sealed wire protective shells. Each part is embedded with independent fuse slots, terminal positioning holes and anti-loosening snap buckles; color differentiation (black / tan) is adopted to distinguish power and signal circuits for convenient assembly inspection. Optimized thin-wall injection mold flow path eliminates shrinkage, warpage and burr defects during molding high-temperature flame-retardant plastics.

Complete Production Workflow

1. Custom precision mold core processing: 5-axis CNC rough forming, micro sinker EDM for tiny dense grid slot contours
2. Vacuum stress relief heat treatment for mold steel to stabilize cavity size under continuous high-temperature injection cycles
3. Multi-stage mirror polishing to reduce melt adhesion of flame-retardant LCP/PBT plastic and lower demolding resistance
4. Segmented temperature-controlled precision injection molding for high-temperature engineering plastics
5. Post-molding full 3D coordinate inspection, burr trimming, high-temperature aging and flame retardancy testing

All finished plastic components pass thermal stability and flame retardancy verification. Custom development is fully supported based on customer circuit layout drawings: fuse slot quantity, pin grid density, plastic flame retardant grade, sealing and locking structure can be adjusted according to circuit load, operating temperature and vehicle assembly requirements. The complete specification series realizes one-stop supply from miniature signal connectors to large multi-circuit vehicle power distribution fuse boxes.

Specification Table