Production process of wear-resistant X70 pipeline steel plate
A production process and steel plate technology, which is applied in the transportation of solid-liquid two-phase fluid as the medium, and the production technology field of wear-resistant X70 pipeline steel plates, can solve the problems of insufficient wear resistance and other problems, and achieve excellent wear resistance and simple composition design. , the effect of simple production process
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[0021] Example 1
[0022] This embodiment provides a production process for wear-resistant X70 pipeline steel sheet. The chemical composition of the obtained pipeline steel sheet is calculated by weight percentage: C: 0.05%, Si: 0.35%, Mn: 1.70%, P: 0.013%, S: 0.001%, Nb: 0.03%, Ti: 0.025%, Cr: 0.10%, Alt: 0.06%, the rest is Fe and unavoidable inclusion elements. Specific requirements are as follows:
[0023] According to the chemical composition requirements, the continuous casting slab is obtained through the smelting process, the refining process outside the furnace, the vacuum treatment process, and the continuous casting process, with a thickness of 150mm.
[0024] Steckel rolling mill production line is used to produce slabs, including slab reheating process, controlled rolling process and laminar cooling (or ultra-fast cooling) process.
[0025] In the slab reheating process, the temperature before heating the slab is 300℃, the heating temperature of the slab is 1180℃, and the...
Example Embodiment
[0028] Example 2
[0029] This embodiment provides a production process for wear-resistant X70 pipeline steel sheet, and the chemical composition of the obtained pipeline steel sheet is calculated by weight percentage: C: 0.10%, Si: 0.22%, Mn: 1.20%, P: 0.015%, S: 0.0018%, Nb: 0.06%, Ti: 0.017%, Cr: 0.50%, Alt: 0.04%, the rest is Fe and unavoidable impurity elements.
[0030] According to the requirements of the chemical composition, the continuous casting slab is obtained through the smelting process, the refining process outside the furnace, the vacuum treatment process, and the continuous casting process. The thickness of the slab is 150mm. Reuse the medium and heavy plate production line to produce slabs, including slab reheating process, controlled rolling process and laminar cooling (or ultra-fast cooling) process.
[0031] In the slab reheating process, the slab heating temperature is 150°C, the slab heating temperature is 1205°C, and the holding time is 100 minutes; in the ...
Example Embodiment
[0033] Example 3
[0034] This embodiment provides a production process for wear-resistant X70 pipeline steel sheet. The chemical composition of the obtained pipeline steel sheet is calculated by weight percentage: C: 0.08%, Si: 0.10%, Mn: 1.45%, P: 0.007%, S: 0.0005%, Nb: 0.035%, Ti: 0.01%, Cr: 0.48%, Alt: 0.01%, the rest is Fe and inevitable impurity elements.
[0035] According to the requirements of the chemical composition, the continuous casting slab is obtained through the smelting process, the refining process outside the furnace, the vacuum treatment process, and the continuous casting process. The thickness of the slab is 150mm. Reuse the Steckel mill production line to produce slabs, including slab reheating process, controlled rolling process and laminar cooling (or ultra-fast cooling) process.
[0036] In the slab reheating process, the slab heating temperature is 250°C, the slab heating temperature: 1170°C, holding for 70 minutes; in the controlled rolling process, th...
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