<\/p>\n
Key Specifications<\/span><\/p>\n<\/div>\n <\/p>\n <\/p>\n Leave Grinding Stock:<\/strong> Sharp Corners:<\/strong> Uniform Cross-Sections:<\/strong> Thread Protection:<\/strong> <\/p>\n Automotive Powertrain<\/strong> Tool & Die Making<\/strong> Aerospace<\/strong> Heavy Machinery<\/strong> Heat Treatment is a controlled heating and cooling process used to alter the physical and mechanical properties of a metal without changing its shape. It is essential for increasing strength, hardness, toughness, or ductility. At Jucheng Precision, we manage a comprehensive range of heat treatment processes through our certified partners to ensure your CNC machined parts meet strict metallurgical requirements.<\/p>\n From Annealing to improve machinability before cutting, to Vacuum Hardening for finishing high-precision mold components, we oversee the entire lifecycle. We verify all treated parts with HRC (Rockwell) hardness testing to ensure they meet your specifications (e.g., 58-60 HRC for tool steels) before final precision grinding.<\/p>","protected":false},"featured_media":395,"template":"","process_category":[38],"class_list":["post-394","process","type-process","status-publish","has-post-thumbnail","hentry","process_category-surface-finishes"],"_links":{"self":[{"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/process\/394","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/process"}],"about":[{"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/types\/process"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/media\/395"}],"wp:attachment":[{"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/media?parent=394"}],"wp:term":[{"taxonomy":"process_category","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/process_category?post=394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n\n
\n \nSpecification<\/th>\n Technical Range<\/th>\n Note<\/th>\n<\/tr>\n<\/thead>\n \n Max Part Size<\/strong><\/td>\n 1000 mm x 800 mm x 800 mm<\/td>\n Depends on furnace capacity<\/td>\n<\/tr>\n \n Hardness Range<\/strong><\/td>\n 20 HRC – 65 HRC<\/td>\n Material dependent<\/td>\n<\/tr>\n \n Case Depth<\/strong><\/td>\n 0.1 mm – 2.0 mm<\/td>\n For Case Hardening \/ Nitriding<\/td>\n<\/tr>\n \n Compatible Materials<\/strong><\/td>\n Carbon Steel, Alloy Steel, Tool Steel, Stainless (17-4PH), Aluminum<\/td>\n Al uses Precipitation Hardening (T6)<\/td>\n<\/tr>\n \n Standard Lead Time<\/strong><\/td>\n 3 – 5 Days<\/td>\n Includes batching and testing<\/td>\n<\/tr>\n \n Validation<\/strong><\/td>\n Rockwell C (HRC), Brinell (HB)<\/td>\n Hardness report provided<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n Heat Treatment Processes<\/h3>\n
\n\n
\n \nProcess<\/th>\n Description<\/th>\n Key Benefits & Applications<\/th>\n<\/tr>\n<\/thead>\n \n Hardening & Quenching<\/strong><\/td>\n Heating metal to a critical temperature and rapidly cooling (quenching) in oil, water, or air to “freeze” the microstructure.<\/td>\n Benefit:<\/strong> Maximum hardness and strength.
\nApp:<\/strong> Tool steel dies, structural steel parts.<\/td>\n<\/tr>\n\n Case Hardening (Carburizing)<\/strong><\/td>\n Diffusing carbon into the surface of low-carbon steel. Creates a hard outer “case” while keeping the core soft and tough.<\/td>\n Benefit:<\/strong> Wear resistant surface + shock resistant core.
\nApp:<\/strong> Gears, shafts, pins, sprockets.<\/td>\n<\/tr>\n\n Vacuum Hardening<\/strong><\/td>\n Performed in a vacuum environment to prevent oxidation and scaling. Provides a bright, clean finish.<\/td>\n Benefit:<\/strong> Minimal distortion and no surface scale.
\nApp:<\/strong> High-precision medical parts, aerospace components.<\/td>\n<\/tr>\n\n Annealing \/ Normalizing<\/strong><\/td>\n Heating and slow cooling to soften the metal, relieve internal stresses, and improve grain structure.<\/td>\n Benefit:<\/strong> Makes material easier to machine and prevents warping.
\nApp:<\/strong> Pre-machining stock, welded parts.<\/td>\n<\/tr>\n\n Nitriding<\/strong><\/td>\n Diffusing nitrogen into the surface to create a hard, wear-resistant layer without quenching. Low distortion.<\/td>\n Benefit:<\/strong> High surface hardness (up to 70 HRC equivalent) and corrosion resistance.
\nApp:<\/strong> Mold cavities, precision screws.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\nDesign Guidelines for Heat Treatment<\/h3>\n
\nHeat treatment causes internal stress release, leading to dimensional distortion (warping) and slight size changes. Tip:<\/strong> Always leave 0.2mm – 0.5mm of extra material (“grinding stock”) on critical features to be ground to final size after<\/em> hardening.<\/p>\n
\nAvoid sharp internal corners. They act as stress concentrators during the rapid cooling of quenching and can cause the part to crack. Use radiused corners whenever possible.<\/p>\n
\nParts with drastic changes in thickness (e.g., a thick block connected to a thin fin) cool at different rates, leading to cracking. Design for uniform wall thickness or gradual transitions.<\/p>\n
\nFine threads can become brittle or distorted during hardening. It is often best to mask threads (if nitriding) or machine them after heat treat if the material isn’t too hard.<\/p>\n<\/div>\nIndustry Applications<\/h3>\n
\nTransmission gears and crankshafts are Case Hardened to withstand constant friction wear while absorbing high torque loads without snapping.<\/p>\n
\nInjection molds made from H13 or P20 steel are Vacuum Hardened to withstand millions of cycles of high-pressure plastic injection without deforming.<\/p>\n
\n17-4PH Stainless Steel parts are Precipitation Hardened (H900 condition) to achieve the maximum strength-to-weight ratio for flight control components.<\/p>\n
\nAxles and drive shafts undergo Induction Hardening (local heating) to harden just the bearing surfaces while leaving the rest of the shaft tough.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"