• 专利标题:   Producing high-performance engineering fastener material useful for fastening at least two parts or components in engineering field, comprises e.g. choosing steel bar as engineering fastener raw material, carrying out degreasing, decontamination and rust removal treatment, compacting and cooling.
  • 专利号:   CN114790537-A
  • 发明人:   SHEN J, HU L, LI H, ZHANG Y
  • 专利权人:   NINGBO JINDING FASTENERS CO LTD
  • 国际专利分类:   C21D001/18, C21D001/26, C21D001/46, C22C038/20, C22C038/22, C22C038/26, C22C038/30, C22C038/32, C22C038/36, C23C010/02, C23C010/52
  • 专利详细信息:   CN114790537-A 26 Jul 2022 C23C-010/52 202275 Chinese
  • 申请详细信息:   CN114790537-A CN10452076 27 Apr 2022
  • 优先权号:   CN10452076

▎ 摘  要

NOVELTY - Producing high-performance engineering fastener material comprises choosing steel bar as engineering fastener raw material, carrying out degreasing, decontamination, and rust removal treatment to the surface, where the steel bar comprises carbon, silicon, manganese, chromium, cobalt, tungsten, hafnium, calcium, copper, niobium, germanium, boron, nitrogen, phosphorus, sulfur, nano titanium boride, nano aluminum nitride, iron and other inevitable impurities (balance), compacting, capping, sealing, performing co-infiltration treatment, placing in a molten salt cleaning agent for cleaning carrying out water quenching and oil cooling, placing in an annealing furnace, heating, thermally insulating, naturally cooling, carrying out cold deformation using cold-drawing process, and performing thread processing to obtain product. USE - The method is useful for producing high-performance engineering fastener material, which is useful for fastening at least two parts or components in engineering field. ADVANTAGE - The high performance engineering fastener material has strong corrosion resistance, good mechanical property, good anti-fatigue performance, stable performance, and long service life. The method has simple technique, convenient operation, does not require special device, high production efficiency and high qualification rate, and has continuous scale production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for high-performance engineering fastener material.