High quality mini excavator attachments bucket pin OEM 8092014/8090472 suitable for Hitachi 330
Raw material preparation
Steel selection: According to the product design requirements, select suitable steel, such as 45# steel, 40Cr, etc. Ensure that the quality of the steel meets the standards and has good strength, toughness and processing performance.
Inspection and warehousing: Strict inspection of the purchased steel, including checking whether the appearance has defects, whether the size meets the requirements, and chemical composition analysis and mechanical property testing. After passing the inspection, the steel is stored in the warehouse and waits for processing.
Cutting: According to the size specifications of the pin shaft, use cutting equipment (such as flame cutting machine, plasma cutting machine, sawing machine, etc.) to cut the steel into the required billet length. When cutting, consider the processing allowance to ensure that the subsequent processing can meet the dimensional accuracy requirements.
Mechanical processing
Rough processing: The billet after forging is first rough processed, including turning the outer circle, end face, drilling the center hole, etc., to remove most of the allowance, leaving a processing allowance of 0.5mm-1mm for subsequent fine processing. Rough processing can improve processing efficiency and reduce processing costs.
Finishing: After rough machining, the pin shaft is semi-finished and finished. The outer circle, inner hole and other key dimensions of the pin shaft are ground by grinding machines and other equipment to ensure that the dimensional accuracy and surface roughness meet the design requirements. The dimensional accuracy can be controlled within ±0.01mm, and the surface roughness reaches Ra0.8-Ra1.6μm.
Milling keyway: According to the design requirements, the keyway and other structures are processed on the pin shaft by milling machines to ensure the dimensional accuracy and position accuracy of the keyway to meet the assembly requirements with other components.
Thread processing: If there is a threaded structure on the pin shaft, a lathe or thread processing machine is used for thread processing to ensure the accuracy and screwing performance of the thread.
Heat treatment
Quenching: The pin shaft after machining is quenched, the pin shaft is heated to above the critical temperature, and then cooled rapidly after a certain period of heat preservation, so that the pin shaft obtains a strengthening structure such as martensite, and the hardness and strength of the pin shaft are improved. The quenching heating temperature is generally between 820℃-860℃, which is adjusted appropriately according to the steel composition and specific requirements.
Tempering: After quenching, the pin has a large internal stress and is brittle, so it needs to be tempered. Heat the pin to a temperature range below the critical temperature, keep it warm for a certain period of time, and then cool it to eliminate the internal stress, stabilize the structure, adjust the balance between hardness and toughness, so that the pin has good comprehensive mechanical properties. The tempering temperature is usually between 550℃-650℃.
Surface treatment
Galvanizing: In order to improve the corrosion resistance of the pin, a galvanizing process can be used. The pin is placed in a galvanizing tank and a zinc layer is formed on the surface of the pin by electroplating or hot dipping. The thickness of the zinc layer is generally 8μm-12μm, which can effectively prevent the pin from rusting and extend its service life.
Phosphating: Phosphating is to form a phosphate chemical conversion film on the surface of the pin, which can improve the wear resistance, lubricity and corrosion resistance of the pin. The thickness of the phosphating film is generally 1μm-5μm, which can improve the friction performance of the pin during operation and reduce wear.
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.
Hitachi pin and bushing
