Calcium silicon cored wire

 The existing calcium-silicon cored wire steel strip and the inner core are installed and fixed by extrusion or welding. With the material guiding, transportation and bending of the calcium-silicon cored wire, There may be gaps at the junction of the cored wire, which will affect the sealing effect of the cored wire, thereby affecting the service life and use effect of the silicon calcium cored wire. A calcium-silicon cored wire with good airtightness can be pre-fixed during installation by setting a first arc-shaped part on one side of the inner steel belt and a hooking part on the other side of the inner steel belt. The outer steel strip is fixed outside the inner steel strip, and the fixing of the inner steel strip can be realized through the second welding pass, and the fixation between the inner steel strip and the outer steel strip can be realized at the same time, which solves the problem of the existing silicon calcium cored wire seal The problem of insufficient effect.

The calcium-silicon cored wire with good airtightness includes an outer cladding and an inner core, and the outer cladding includes an inner steel strip and an outer steel strip; one side of the inner steel strip is provided with a first arc, and the other side of the inner steel strip is There is a hooking part on the side, and the two sides of the inner steel belt are engaged with the first arc part through the hooking part, and the outer surface of the inner steel belt is provided with a concave edge at the position between the first arc part and the hooking part The outer steel strip surrounds and is fixed on the outer surface of the inner steel strip by welding, the two sides of the outer steel strip are opposite to the two side walls of the concave edge, and a second welding bead is formed between the two sides of the outer steel strip and the concave edge; The core is fixed in the cavity formed by the inner steel belt. By setting the first arc-shaped part on one side of the inner steel belt, and setting the hooking part on the other side of the inner steel belt, it can be pre-fixed during installation, and can be reinforced and fixed by welding in the first welding bead At the same time, the outer steel strip is fixed outside the inner steel strip, and the inner steel strip can be fixed through the second welding pass, and the inner steel strip and the outer steel strip can be fixed at the same time, thus greatly improving the silicon-calcium cored core. The sealing effect between the wire steel belt and the inner core is improved, thereby improving the sealing effect of the silicon-calcium cored wire.