Jinan Ruihai Hydraulic Machinery Co., Ltd. stands out as a leading domestic manufacturer specializing in the production of hydraulic lifts and lifting platforms. Our products, including hydraulic lifts, lifting platforms, and aerial work platforms, are renowned for their quality and are widely distributed across the country, earning the trust and satisfaction of numerous customers.
One of our standout offerings is the aluminum alloy elevator, crafted from high-strength, premium-grade aluminum alloy materials. This design boasts a sleek appearance, compact size, lightweight construction, and effortless operation, making it highly versatile and easy to deploy. Its smooth lifting mechanism ensures both safety and reliability, while its slim profile allows it to maximize lift capacity even in tight spaces.
The elevator rack serves as a critical component in our lifts and plays a pivotal role in ensuring safe and efficient usage. Typically manufactured from high-carbon, high-quality carbon structural steel or low-alloy steel, the rack undergoes a final heat treatment process involving low-temperature tempering after normalizing. The microstructure of the rack significantly influences its performance, making it essential to analyze and address any issues arising from structural failures.
During a recent incident, one of our aluminum alloy elevator racks broke during routine handling operations. The affected rack was made from 60 steel and had undergone the standard heat treatment process of low-temperature tempering following normalization. A detailed examination of the fractured rack revealed a characteristic river-pattern fracture, a hallmark of cleavage fracture. Microscopic observations and energy spectrum analyses were conducted, alongside metallurgical structure evaluations. Further chemical composition and mechanical property assessments were carried out to pinpoint the root cause of the failure.
The river-pattern fracture indicates a brittle fracture triggered by an impact load. Analyzing the heat treatment process, we identified the primary culprit as improper heating and cooling procedures. Specifically, the normalizing heating temperature was set too high, resulting in the formation of coarse austenite grains. The subsequent rapid cooling method led to the precipitation of pro-eutectoid ferrite in a network-like pattern along the austenite grain boundaries. Comparing the fractured rack with an intact one, the networked ferrite distribution was evident in both cases, though the intact rack exhibited coarser grain structures.
These findings underscore the importance of adhering to optimal heat treatment protocols. In this instance, improper heating and cooling practices led to a coarse grain structure and a networked ferrite distribution, contributing to the rack's fracture.
Understanding the significance of these components is crucial for maintaining the integrity and longevity of hydraulic equipment. If you're interested in learning more about our products or need assistance with your hydraulic machinery needs, don't hesitate to reach out to Jinan Ruihai Hydraulic Machinery Co., Ltd. at http://www.jnruihai.com. Our team is here to provide expert guidance and support.
As we continue to refine our manufacturing processes and product designs, we remain committed to delivering reliable, high-performance solutions tailored to meet the evolving demands of our clients. Whether you're in need of hydraulic lifts, lifting platforms, or other specialized machinery, our dedicated professionals are ready to assist you every step of the way.
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