| 摘要 |
FIELD: heating.SUBSTANCE: invention relates to a fan header and method of its manufacturing. With the help of a laser they cut shells, flanges in the form of a circumference segment, connection flanges and stands in the form of stiffening ribs. Flanges and stands are made with T-shaped slots, and shells - with response cogs. Flanges in the form of the circumference segment, connection flanges and stands in the form of stiffening ribs are welded into metal frames. Frames are fixed to shells by means of joint cogs in T-shaped slots and welding in points of jointing to form sectors. Then the produced structure undergoes hot galvanisation.EFFECT: increased durability of a product due to fine cutting of a header and a shell blanks, and hot galvanisation of items.3 cl, 4 dwg |
