Stabilizer Connection Plate Joining Through Alloy Oxide Regions

The patent applies preliminary action by performing oxygen reduction treatment before the forging step. The steel pipe is heated to form Fe oxides on the inner surface, then oxygen is reduced by introducing a reducing atmosphere or using a reducing agent before radial crushing. This preliminary removal of oxygen prevents the formation of harmful layered Fe oxide structures during subsequent forging, ensuring strong bonding between base material portions while maintaining the simplicity of the overall manufacturing process

The patent changes the chemical and physical parameters during the heating and forging process. Specifically, it controls the oxidation state by adjusting the atmosphere composition (introducing reducing gases like nitrogen or carbon dioxide), temperature profiles, and timing of oxygen reduction. These parameter changes transform the Fe oxide layer from a harmful continuous structure into scattered alloy oxides embedded in the base material, eliminating gaps while maintaining manufacturing simplicity

By performing oxygen reduction treatment before forging, the patent eliminates the formation of continuous Fe oxide layers that would create gaps. This preliminary action ensures that even when the stabilizer is made thinner, the base material portions bond strongly without gap formation, maintaining strength while achieving weight reduction

The patent converts the potentially harmful Fe oxides formed during heating into beneficial scattered alloy oxides through controlled oxygen reduction. Instead of forming continuous layers that create gaps, the oxides become dispersed particles embedded in the base material, which actually strengthen the structure. This allows thinner designs to maintain or even improve strength while reducing weight