Molybdenum Piercing Plate

    In the hot rolling and piercing process of modern high-end seamless steel pipes (especially stainless steel, heat-resistant alloy steel and high-grade special steel pipes), the life and stability of rolling tools directly determine the production cost of the finished product and the enterprise. When the steel plug is faced with high temperature above 1200 ℃, thermal shock and high strength machinery, it is very easy to stick to steel, deform or crack.

    Our high-performance Molybdenum Plug is designed for harsh working conditions. Using high-quality molybdenum and rare earth/TZM alloy raw materials, it has excellent high-temperature strength, thermal fatigue resistance and excellent thermal conductivity, which can effectively prevent capillary defects and greatly improve the operation efficiency of the production line.

Core Technical Parameters and Chemical Composition & Specs

    In order to meet the strict traceability requirements of clients, our products are provided with pure molybdenum and mainstream TZM (titanium zirconium molybdenum) alloy materials to ensure creep resistance under extreme conditions.

Manufacturing Process

    We adopt a rigorous powder metallurgy and precision machining process to eliminate internal pores and porosity from the source:

    Raw material ratio and mixing (Powder Mixing): Select high-purity molybdenum powder and trace rare earth/TZM strengthening elements, and carry out efficient homogenization mixing for several hours.

    Cold Isostatic Pressing: Large tonnage molding or isostatic pressing is used to ensure uniform green body density.

    High-Temperature Sintering: High-Temperature Sintering in an advanced hydrogen-protected furnace to achieve grain reconstruction.

    Precision Machining (Machining & Threading): Through CNC lathes and special thread processing equipment, the geometric tolerance of the plug and the fit accuracy with the mandrel are ensured.

    Inspection & Packaging: Strictly carry out dimensional tolerance, flaw detection and density detection, and use moisture-proof vacuum wooden box Packaging.

Mechanical Properties & Standards

    Implementation standards: Compliance with ASTM B387 (standards for molybdenum and molybdenum alloy bars and billets) and corporate strict control and internal control standards.

    High temperature Tensile Strength (Tensile Strength): extremely high tensile and shear strength at 800°C ~ 1000°C high temperature, preventing the plug from being pierced Plastic collapse occurs instantly.

    Thermal Shock Resistance: In the face of repeated sudden cooling and sudden heating (cooling water spraying) during the rolling process, it shows strong anti-cracking ability.

Application Areas (Target Applications)

    This product is widely used in the world's major seamless steel pipe factories and special material processing fields:

    Hot rolling and piercing of seamless steel pipes: Manneann cross-rolling piercing machines are used to produce stainless steel pipes, heat-resistant alloy pipes, bearing pipes and high-pressure boiler pipes.

    Special alloy pipe: As high temperature mold and top core, improve the uniformity of metal flow.

    Glass fiber and container manufacturing: Some high-temperature anti-oxidation special molybdenum plugs are also used in the high-end glass forming industry.