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The biggest challenge of MIM lies in the 15%~20% bulk shrinkage during sintering. High precision is essentially achieved by controlling uniformity across the entire process: stable feedstock → uniform green part density → distortion-free debinding → consistent sintering shrinkage. Combined with mold shrinkage compensation, post-finishing correction and SPC control, standard MIM can reach a dimensional tolerance of ±0.3%, while critical features can achieve ±0.02～0.05 mm.

Core Reasons Why Powder Metallurgy Is the Optimal Process for Meat Grinder External Locking Cutter Discs The core requirements for external locking cutter discs (meat outlet plates): uniform hole positions, flat end faces, wear resistance, deformation resistance, food safety, and low cost for mass production. Near-net-shape powder metallurgy (PM) perfectly meets these requirements and has prominent advantages over stamping, CNC machining and die casting.

Metal Injection Molding (MIM) features core advantages: it is suitable for mass production of small, high-strength metal parts with complex thin walls, 3D irregular geometries and high dimensional accuracy. Complex components with holes, grooves, threads and curved surfaces can be formed in one step, greatly reducing CNC machining and improving material utilization. This perfectly matches the development trend of automation equipment and precision instruments towards miniaturization, integration and high precision.

The main cause of MIM mold wear: continuous abrasion of the mold cavity by metal powder in feedstock, which is far more severe than common plastic injection molds. Core strategies: mold material selection + surface strengthening + product structure optimization + injection process control + regular maintenance.

Powder metallurgy gears adopt the near-net-shape process. After sintering, parts are basically close to finished dimensions with little or no subsequent machining. Its advantages focus on five dimensions: cost, forming capability, lubrication, batch consistency and material design.

In short: Breaking the boundaries of size and material, digital and intelligent process, green short-cycle manufacturing, cross-process integration, and application expansion from 3C products to medical devices, humanoid robots, new energy vehicles and high-end aerospace components.