Manufacturing method of independent welded grinding-tooth-shaped bimetal band saw blade

The invention relates to a manufacturing method of an independent welded grinding-tooth-shaped bimetal band saw blade, which sequentially comprises the following five steps of carrying out forming processing and heat treatment on a tooth part material; carrying out forming processing and heat treatment on a steel band back material; welding the tooth part material and the steel band back material which are subjected to heat treatment into one whole body; carrying out heat treatment on a welding region; carrying out forming processing on the welded tooth part material, the welding region and the welded steel band back material, removing welding slag generated in the welding process and processing a cutting edge on the tooth part material. The tooth part material and the steel band back material are respectively and separately subjected to heat treatment before welding without adopting a process of carrying out online quenching and annealing on a current composite material, so that performance of the tooth and back materials can be sufficiently utilized; the tooth part material and the steel band back material are respectively subjected to forming processing, so that the condition that the tooth part material and the steel band back material are cut after being welded to cause cutting on most of the tooth part material is avoided and loss of raw materials is reduced.