Combined sintering and surface treatment method for variable geometry turbocharger blade

• Main Authors: RENOLD, PETER, MULUKSAN PADMAVATHI
• Format: Patent
• Language: Chinese; English
• Published: 13.05.2022
• Subjects: ALLOYS; BLASTING; CASTING; CHEMISTRY; ENGINE PLANTS IN GENERAL; FERROUS OR NON-FERROUS ALLOYS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MECHANICAL ENGINEERING; METALLURGY; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PERFORMING OPERATIONS; POWDER METALLURGY; STEAM ENGINES; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS; WORKING METALLIC POWDER

A method for manufacturing a blade of a variable geometry turbocharger (VGT) comprises the steps of: providing or obtaining a base metal in powdered form; mixing a binder with the powdered base metal to form a mixture; performing an injection molding process using the mixture to form a green substrate in the shape of the blade; debonding the green base material to form a semi-green base material which is of a porous structure and is in the shape of the blade; applying a surface treatment slurry to at least a portion of the half substrate, and sintering the surface treated half substrate to form the blade. 一种用于制作可变几何结构涡轮增压器(VGT)的叶片的方法包括以下步骤：以粉末状形式提供或获得基材金属；将粘结剂与所述粉末状基材金属混合以形成混合物；使用所述混合物实施注射模制过程以形成呈所述叶片的形状的生坯基材；对所述生坯基材进行脱粘以形成具有多孔结构的呈所述叶片的形状的半生基材；向所述半生基材的至少一部分施用表面处理浆料，以及烧结所述经表面处理的半生基材以形成所述叶片。