【Ten Years of Rapid Development in Chemical Processing Equipment】Ball heads with an overall compression diameter of 6 meters and a thickness of 92 millimeters, made of 14Cr1MoR, from 1186 to 2022

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Looking at the development of chemical engineering technology over the past decade, we celebrate the prosperity and strength of modern China. This is just a starting point to encourage more participation and lively discussions; with you here, HaiChuan becomes even better. [Ten Years of Progress in Chemical Engineering Equipment] – continuous updates and summaries are available; feel free to join the discussions at https://bbs.hcbbs.com/thread-3576046-1-1.html. It is important to enhance quality awareness and promote high-quality development.----------------------------------------- In October 2022, the successful delivery of spherical heads of model HHA5900*92, made from 14Cr1MoR material, manufactured by Henan Shenzhou Head Co., marked another achievement for presses capable of handling 39,000 tons of pressure. This represented a new innovation and breakthrough in the field of fully formed spherical heads. It also demonstrated the innovative spirit and willingness to take on challenges of Shenzhou Head’s technical team. Behind this project’s successful implementation through reform and innovation was the collaborative effort between production, research, and sales under Shenzhou Head’s “iron triangle” model, as well as their complementary approaches. This reflected the new approach adopted by the marketing team in terms of customer management and market positioning； New goals for the technical team to improve proactive services and solution delivery ； The production team has enhanced process management and delivery efficiency, thereby realizing the customer-centered concept of “product + service”. Throughout the pressing process, it is necessary to overcome significant challenges such as a product weight of 40 tons and a stretching height of nearly 3 meters. These issues include difficulties in forming the end caps, poor fit of the pressing molds, control over the flatness of welds in the raw materials, and management of deformation during heat treatment. Through multiple discussions and simulations of the processing methods, the technical team ultimately developed solutions that address both quality and cost considerations. In terms of the forming method, due to the high stretching depth and large deformation extent of the end caps, a 2–3 stage hot stamping process was employed ； Regarding the mold matching issue, in the face of inconsistencies in mold, blank holder, and pull tab specifications, existing resources were utilized to modify the molds, and a method was adopted that involved replacing the blank holder and the lower die after each stamping operation ； Regarding welding issues, in order to meet the strict requirements for the flatness of steel plates (92mm), production staff assigned skilled welders to focus on every detail and strictly follow the established manufacturing procedures ； Regarding heat treatment, in cases where the head height is greater than 3 meters and strict tolerances are required regarding ellipticity, technicians determine the position and distance of the supports inside the furnace to ensure proper positioning and lifting of the head when it is at rest. Ultimately, this technological innovation was achieved through continuous improvements in various stages.