An assembling and welding process for an oversize saw blade base

Abstract

This invention discloses a welding process for assembling ultra-large saw blade substrates, applicable to the manufacture of diamond circular saw blade substrates with an outer diameter greater than 5000mm. The process sequentially includes the following core steps: segmented substrate preparation and pretreatment, adaptive anti-deformation unconstrained positioning, pre-welding dehumidification pretreatment, double-sided alternating segmented back-welding, dynamic stress compensation hot-pressing slow cooling, and multi-stage finishing. It preferably utilizes high-strength weldable structural steel that requires no preheating, combined with closed-loop heat input control and gradient wear-resistant coating optimization. This invention solves the technical problems of large post-weld thermal deformation, high residual stress, and substandard precision in ultra-large saw blades. The welded substrate exhibits high precision and stable performance, suitable for industrial mass production.

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