Patent ID: 6174491
Filing Date: 2001-01-16
Classification: B23K

Abstract:
A lower block assembly for use in a thermochemical scarfing apparatus and comprising:a block having opposite upper and lower faces, opposite end faces, and opposite front and rear faces extending between said end faces to define a longitudinal direction extending therebetween,an extension extending in a forward direction from said front face of said block and including a second upper face which is substantially parallel to said upper face of said block, and with said second upper face being spaced below said upper face of said block so as to define a height, and wherein the second face extends forwardly from said front face a distance of between about 21/2 to 5 times said height, andgas discharge outlet means positioned to communicate with said front face between said upper face of said block and said second upper face and extending longitudinally across substantially the full longitudinal extent of the front face, such that a gas may be discharged forwardly from said outlet means to form a sheet-like gas flow extending forwardly across said second upper face.