Luoyang Yujie Industry&Trade Co., Ltd is one of the most experienced manufacturers and suppliers of extrusion press stem in China. Please feel free to buy cheap extrusion press stem for sale here from our factory. All customized products are with high quality and competitive price.
Products Description
The extrusion press stem , also called the push rod or pressure rod, is a core force-transmitting component in metal extrusion equipment. It is a solid or hollow rod-shaped structure, mostly forged from high-strength alloy steel, possessing characteristics of impact resistance, high pressure resistance, and resistance to deformation. One end connects to the main plunger of the extruder, and the other end connects to the billet, serving as the "force transmission bridge" of the extrusion system. During extrusion operations, the extrusion rod precisely transmits the axial pressure of the main extruder to the metal billet, forcing the billet to undergo plastic deformation within the extrusion cylinder and be formed through a die. It is a key force-bearing component for the extrusion forming of profiles and tubes, widely used in hot and cold extrusion processes of metals such as aluminum, copper, and steel.
Products Description and materials
The core of extrusion press stem material selection is suitability for different working conditions: For light-load, low-stress conditions, alloy structural steels such as 40Cr and 42CrMo are selected to meet the basic strength and toughness requirements; for medium-load, medium-temperature conditions, H13 hot work die steel is used to resist thermal fatigue and wear; for heavy-load, high-temperature, and high-pressure conditions, 3Cr2W8V and GR steel are preferred, taking into account high-temperature strength, red hardness, and creep resistance. For harsh conditions, the base material can also be strengthened by tempering, surface hardening, and other treatments.
machinery processing
The extrusion bar is a core load-bearing component of the extrusion equipment. Its processing revolves around high strength, high wear resistance, and fatigue resistance, and is divided into four main stages: raw material processing, machining, heat treatment, and finished product inspection. Raw materials are selected from alloy structural steel or nitrided steel forgings. Internal defects are eliminated through flaw detection, and post-forging annealing relieves stress and ensures processing stability. Machining follows the principles of roughing, semi-finishing, and finishing. Rough turning removes excess material and defines the basic shape; semi-finishing turning trims positioning surfaces and machines center holes to ensure coaxiality; finishing employs high-precision machining and grinding of key mating surfaces, completing the machining of connection parts to ensure a proper assembly fit. Heat treatment primarily involves tempering and surface strengthening. Tempering gives the core strength and toughness, while surface quenching or nitriding improves surface hardness and wear resistance. Low-temperature tempering after quenching eliminates stress and prevents cracking. Finished products undergo precision instrument dimensional testing, sampling verification of mechanical properties, professional flaw detection to eliminate internal defects, and assembly testing. Only after all indicators pass the tests can the product be put into storage.
Testing
►Dimensional inspection: This test involves measuring the dimensions of the machined part to ensure that it meets the required specifications and tolerances.
►Hardness testing: This test involves measuring the hardness of the machined part to ensure that it meets the required strength and durability requirements.
►Material analysis: This test involves analyzing the material properties of the machined part to ensure that it is the correct material and meets the required standards.
►Non-destructive testing (NDT): This type of testing involves using methods such as ultrasonic testing, magnetic particle inspection, or dye penetrant inspection to detect defects in the machined part without causing damage.
►Performance testing: This test involves testing the performance of the machined part in the actual application to ensure that it meets the required performance requirements.
►Magnetic particle inspection (MPI): This method uses magnetic fields and iron particles to detect surface and near-surface defects in the gear shafts, such as cracks or inclusions. The gear shaft is magnetized and then iron particles are applied to the surface. Any defects will attract the particles and produce a visible indication.
about us
Luoyang Yujie specializes in the customization, processing, and assembly of large, heavy-duty, and non-standard machined parts. Simultaneously, it is committed to deeply cultivating the field of large-scale production line projects, contributing to the industrial upgrading of related sectors. With over twenty years of experience in the industry, the company is equipped with hundreds of large-scale CNC machining machines and boasts a professional technical and processing team. It can precisely produce various parts for mining, petrochemical, and other fields, strictly adhering to the ISO9001 quality system and providing one-stop customized services. Its products are sold both domestically and internationally.
In large-scale production line projects, the company focuses on industries such as steel mills, sugar mills, and cement kilns.
Contact US
Do you have any specific questions about the design and manufacture of Extrusion Press Stem ? Contact Yogie!Our sales engineers will work with you from start to finish to ensure that your project is completed to your requirements.
tel: +86-379-65163600
phone: +86-15036387078
envelope: sales@yujieindustry.com
fax:+86-379-65163600
address:No.9, Sanxi Road, Jianxi Industrial Park, Luoyang City, Henan, China 471003
whatsapp: 8615036387078
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