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Customer service center has provided after-sales service for many large-scale information systems, and has accumulated rich working experience in the process of JIS G3114 hot-rolled plate grade SMA490BW service for many years. It can provide accurate, timely and high-quality support and service for users, which is well received by users.
The wear-resistant plate JIS G3114 hot-rolled plate grade SMA490BW shows good wear resistance: the chemical composition of the alloy layer contains 4-5% carbon and 25-30% chromium. The volume fraction of Cr7C3 carbide in the metallographic structure is more than 50%, the macro hardness is HRC56-62, and the hardness of chromium carbide is HV1400-1800. Because of the vertical distribution of carbides in the wear direction, the wear resistance of the cast alloy with the same composition and JIS G3114 hot-rolled plate grade SMA490BW hardness is more than twice as that of the cast alloy with the same composition and hardness. Compared with several typical materials, the wear resistance is as follows: (1) compared with low carbon steel; 20-25:1 (2) with as cast high chromium cast iron; 1.5-2.5:1.
S355J2 steel plate JIS G3114 hot-rolled plate grade SMA490BW rolling process is controlled rolling process. In the rolling process, the ingot rolling temperature is 1000-1050℃; in the first stage, the low-speed and large reduction rolling process is adopted, the high-temperature stage is 950-1000℃, the rolling speed is 1.6-2.0m/s, the JIS G3114 hot-rolled plate grade SMA490BW single reduction rate is 15-20%, and the cumulative reduction rate is 40-45%, so as to ensure sufficient deformation of ingot. In the first stage, the start rolling temperature is 910-930℃, and the finish rolling temperature is ≤ 870℃.
In 2015, we offered 230 tons 309S and 310S stainless steel JIS G3114 hot-rolled plate grade SMA490BW plate to Vietnam fabrication company. The products are used in fabricating machine for this company. Then the customer sell the machine to south America and European market. This Vietnam company purchase more than 100 ton stainless steel from us every month.