| 摘要 |
The soldering glass compsn. for magnetic head comprises 47-57 wt.% of PbO, 24-32 wt.% of SiO2, 5-9 wt.% of B2O3, 4-8 wt.% of ZnO, 0-6 wt.% of Na2O, 0-6 wt.% of K2O, and 0-4 wt.% of Al2O3. The obtd. soldering glass compsn. is useful in mechanically melt-sticking at high temp. of two parts of ferrite single crystalline in the producing process of VTR magnetic head. The process is useful for preventing the crack of glass and the reduction of output power, and giving improved chemical resistance and wear resistance to provide the excellent magnetic head.
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