Disclosed is a novel hollow shaft manufacturing method, comprising the steps of hollow cold-rolling of seamless steel pipe, cutting, annealing and surface treatment, forming by forging, precision machining, and heat treatment. The present invention uses a new process instead of the traditional process. The forging process using high-strength cold-rolled seamless steel pipes has fewer steps than using bar stock: saving three forging passes, one annealing pass and one surface treatment pass, hence saving about 1/2 in time and cost, shortening the cycle, reducing costs, reducing energy consumption and reducing the three wastes, increasing the stock utilization rate to about 68%, and reducing the inter-process cost calculated by weight. For the same products, using this process can shorten the production cycle.
NOVEL HOLLOW SHAFT MANUFACTURING METHOD
NEUARTIGES VERFAHREN ZUR HERSTELLUNG VON HOHLWELLEN
NOUVEAU PROCÉDÉ DE FABRICATION D'ARBRE CREUX
2021-12-15
Patent
Electronic Resource
English
IPC: | B23P Sonstige Metallbearbeitung , OTHER WORKING OF METAL / B21J FORGING , Schmieden / B21K MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS , Herstellen von Schmiede- oder Presserzeugnissen aus Metall, z.B. Hufeisen, Nieten, Bolzen oder Rädern / B60B VEHICLE WHEELS , Räder für Fahrzeuge / F16C SHAFTS , Wellen |
TRANSMISSION HOLLOW SHAFT, BOGIE COUPLER, AND MANUFACTURING METHOD FOR TRANSMISSION HOLLOW SHAFT
European Patent Office | 2023
|Manufacturing method of hollow half shaft of heavy-load automobile and hollow half shaft
European Patent Office | 2021
|