20Y-70-31251 Source factory excavator pin heavy machinery pin suitable for KOMATSU PC200/PC220
Raw material preparation
Material selection: According to the performance requirements of the product, select suitable steel, such as 45# steel, 40Cr, 35CrMo or GCr15, etc. Ensure that the raw materials have good chemical composition and physical properties and meet relevant standards and design requirements.
Inspection: Strict inspection of the purchased steel, including checking whether the appearance of the material has defects, such as cracks, pores, etc., while conducting chemical composition analysis and mechanical property tests, such as hardness, strength, etc., to ensure that the quality of the raw materials is qualified.
Cutting: According to the size specifications of the pin, use cutting equipment such as sawing machine, flame cutting machine or laser cutting machine to cut the steel into suitable blanks. The size of the blank should take into account the subsequent processing allowance.
Machining
Rough machining: Use a lathe to rough-turn the forged blank, remove most of the allowance, and preliminarily machine the basic shapes of the pin such as the outer circle and end face, leaving a processing allowance of 0.5-1mm for subsequent finishing. During the rough machining process, pay attention to controlling the cutting parameters to avoid problems such as excessive tool wear or workpiece deformation.
Finishing: including finishing turning, grinding and other processes. Finishing turning can further improve the dimensional accuracy and surface roughness of the pin shaft, while grinding is used to process surfaces that require higher precision and finish, such as mating surfaces, to ensure good fit between the pin shaft and other components.
Drilling and slot milling: According to the design requirements of the pin shaft, a drilling machine is used to perform drilling operations to process mounting holes, etc. For some pin shafts with keyways or oil grooves, a milling machine is also required to perform slot milling to ensure the size and position accuracy of the groove.
Heat treatment
Quenching: The machined pin shaft is heated to above the critical temperature, and then rapidly cooled after being kept warm for a certain period of time to obtain a martensitic structure and improve the hardness and strength of the pin shaft. Parameters such as quenching heating temperature and cooling rate need to be precisely controlled according to the type of steel and specific performance requirements.
Tempering: There is a large internal stress inside the quenched pin shaft, and the brittleness is relatively large. Tempering treatment can eliminate internal stress, stabilize the structure, improve toughness, adjust the balance between hardness and strength, and enable the pin shaft to achieve the best comprehensive mechanical properties. The tempering temperature is generally between 500 - 650°C, which is adjusted according to different materials and performance requirements.
Surface treatment
Hard chrome plating: Hard chrome plating can form a hard and smooth chrome layer on the surface of the pin, which can not only improve the surface hardness and finish of the pin, but also enhance its wear and corrosion resistance and improve the appearance quality of the pin.
FAQs
Q1: What is the typical lifespan of the Custom Steel Excavator Pin for Hitachi 200?
A1: Our hardened excavator pins are built for extended durability, offering high performance over time with proper maintenance.
Q2: Do you offer Custom Excavator Pins for other Hitachi models?
A2: Yes, we specialize in custom steel pins for a range of Hitachi models. Contact us to get the perfect match for your equipment.
Q3: How does the hardened steel pin shaft improve excavator performance?
A3: The hardened steel pin shaft enhances wear resistance and load-bearing capacity, improving performance in demanding construction and mining operations.
Q4: Can your Custom Excavator Pins be used for both construction and mining?
A4: Our custom steel pins are designed to handle heavy-duty tasks across industries such as construction, mining, and earth-moving.
Q5: How do I place a bulk order for the Custom Steel Excavator Pin?
A5: Get in touch with us for bulk orders, and we will provide a personalized quote and production timeline for your custom pin shafts.
Q6: What quality control measures do you implement for Custom Excavator Pins?
A6: Our custom pins go through rigorous quality control, ensuring strict adherence to specifications, material standards, and durability for optimal performance.
Q7: Can I choose specific materials for the Custom Steel Pin?
A7: Yes, we offer various materials such as 45C, 41Cr4, and 42CrMo4, allowing you to select the ideal material for your excavator pin requirements.
Q8: How can I ensure the Custom Steel Excavator Pin fits my Hitachi equipment perfectly?
A8: Our custom steel pins are made to precise dimensions, and we offer tailored solutions to guarantee a perfect fit for your Hitachi 200 excavator.
