METHOD FOR WELDING HOMOGENOUS POROUS MATERIALS Russian patent published in 2023 - IPC B23K33/00 B23K26/211 B23K26/32 B23K15/00 

FIELD: welding.

SUBSTANCE: invention relates to a method for welding homogenous porous materials. Butt welding is performed with a high-energy laser radiation source. Before welding, a welded zone of materials is purified, and an insert of compact material identical in its chemical composition to welded porous materials is placed between welded materials. Welding is carried out with addition to the welded zone of modifiers in the form of nano-powder materials selected from a number of refractory compounds. An insert thickness (δ) is specified with a ratio , where b₀ = 1 is a correction factor; is a temperature conductivity coefficient of compact material; τ is time of impact of a laser beam on the insert, while τ= d_F/ν, where d_F is a diameter of a focal spot; ν is a welding speed, and an insert height h is specified as exceeding a thickness h_s of welded materials by a value Δh=b₁m_ph_s, where b₁ = 0.78 is empirical constant; m_p is porosity.

EFFECT: prevention of sagging of a face surface of a welded joint and, respectively, increase in the quality of the welded joint, strength, and plasticity of the welded joint.

1 cl, 3 dwg