DAIHEN (President: Tetsuya Tajiri) upgraded its welding robot system “Synchro Feed” capable to control spatters to the utmost limit even in the high-speed CO2 welding by loading the newly developed wire-feeding unit of forced air cooling type. Daihen is planning to expand to the welding applications which requires a high electric current of 300A.

“Synchro Feed” has been sold since March last year as a welding robot package to enable the least possible spatters even in such an extensive range as 50 up to 300A. Daihen has been selling more than 300 sets in Japan and abroad mainly to the automobile industry in which there are advancing needs from less spatters to “Non spatter”. However, the use rate was so low as 30% despite the possibility of extremely less spatters in the medium-thick plate welding like 3mm or more requiring 300A, while the rate was 100% in the thin mild steel plate welding in the field of low current area of 50 to 200A. The users had an issue in productivity as they had to make setting by controlling the welding current and speed. In addition, there were so high needs for spatter-free of stainless steel or galvanized steel plates that Daihen was in a hurry to develop Synchro Feed to expand a range of application.

By means of adopting a forced cooling system by the own development, the new wire feeding unit has enabled us to attain the use rate of 100% even in the high-voltage zone which affected the rate. It followed that a continuous welding with minimum spatters became possible even while assuring a sufficient penetration.

Daihen’s FA Robot Division which has engaged in the development is confident of its product development saying, “We have attained the possibility of 100% use rate which was said to impossible even in the thickness range from 15 up to 20mm of plate.” Furthermore, the motor of this wire-feeding unit is furnished with the “air-saving function” which cools the motor by air only when the temperature rises more than the determined degree, contributing also to the reduction of electricity cost.

A package using Daihen’s Welding Robot “FD-B4” is priced at 8.2 million yen and the one using “FD-B” at 8.14 million yen. Daihen is planning to sell 1000 units per year by a simultaneous release to the domestic and overseas market. They say that the company is also proceeding with its development activities to meet requirements for aluminum materials.