1991 Volume 53 Issue 4 Pages 41-52
There are two design objects in a subsoiler with pressurized fluid injection, that is used as a pan-breaker and as an injector. A large soil failure rate is desirable in the case of pan-breaker and a small soil failure rate in the case of injector. This report deals with the relation between the soil failure rate and the shapes of shanks and chisels without fluid injection.
The results showed that the appropriate pan-breaker without fluid injection should have the rake angle of 45-60°, the shank thickness of more than 15mm, the chisel length of 250mm, and the chisel thickness of 50×50mm. The appropriate injector without fluid injection should have the rake angle of 90°, the shank thickness of less than 15mm, the chisel length of 130mm, and the chisel thickness of 30×30mm.
