Gradient material design process for laser-manufactured hot-rolled strip coil leading guide liner

Abstract

The invention discloses a gradient material design process for a guiding ruler liner plate used before hot-rolled strip steel coiling through laser manufacturing. The process is characterized in that the guiding ruler liner plate comprises a priming layer, a transition layer and a functional layer through gradient design, wherein a priming layer cladding material comprises 3.6-18% of Cr, 5-16% of Mn, 0.2-0.7% of Si, 3-8% of N, 4-18% of W, 8-19% of B and the balance Ni; a transition layer cladding material comprises 3-18% of Cr, 4-15% of Mn, 0.1-0.6% of Si, 3-8% of N, 6-16% of W, 8-15% of B and the balance Ni; and a functional layer cladding material comprises 3-16% of Cr, 5-15% of Mn, 0.1-0.5% of Si, 3-6% of N, 8-18% of W, 8-12% of B and the balance Ni. The service life of the guiding ruler liner plate is prolonged to 5-6 times that of original guiding ruler liner plates.

Description

technical field [0001] The invention relates to a material design process for manufacturing hot-rolled strip steel crimp front guide liner, in particular to a gradient material design process for manufacturing hot-rolled strip coil front guide liner by laser cladding, belonging to IPC International C23C24 / 10(2006.01) I technical field in the patent classification table. Background technique [0002] With the increasingly fierce competition in the steel industry, in recent years, the high-standard coil shape requirements of coils have become an important indicator of the qualified rate of finished steel coils, which directly affects the product grade. As an important spare part, the guide liner, especially the guide liner before coiling, is an important part of the hot rolling production line, which has a decisive influence on the final forming of the steel coil. The guide liner guides the high-speed running strip into the pinch roller of the coiler accurately. Due to the po...

AI Technical Summary

Problems solved by technology

As the guide liner is a component used in special working conditions, the conventional laser cladding molding process and material design process cannot achieve defect-free and homogeneous manufacturing of the guide liner

The reason is that this specific high-temperature wear-resistant material, that is, a material with both high-temperature oxidation resistance and wear resistance, can only achieve single-layer cladding in conventional laser cladding. Once multi-layer cladding is performed, it is easy to cause multiple layers of cladding. The accumulation of small thermal cracks during the first laser welding process may even cause strong layer cracking of the cladding layer in severe cases, and even cause the cladding layer to fall off and fall off, which cannot be applied to production at all.