Grinding Wheel: Silicate-Bonded (Machinery's Handbook, 1924)

A wheel bonded with silicate of soda and baked at a much lower heat than a vitrified wheel; quick to make, can be very large (up to 60 in), and wears little while cutting cool. Source: Machinery's Handbook (1924), pp. 1101-1102. Unknown: proportions and temperatures. Picture: the handbook's text.

中级

Unknown

说明

Mix and tamp

Mix the abrasive grain with silicate of soda and tamp the mixture into moulds (some shapes are pressed hydraulically). Not given: proportions.

此步骤所需材料：

氧化铝磨料砂1 个

水玻璃（硅酸钠溶液）1 个

所需工具：

搅拌盆套装

模具

木槌

Dry and bake

Dry the wheels and bake them in ovens from which all fire gases are kept out, at a far lower heat than vitrified wheels need; a chemical reaction sets the bond.

所需工具：