The definition of wire drawing molds, steps and precautions and selection principles of filament blanks

Do you know the definition, steps, and precautions of wire drawing molds? Today, the river introduces you to the definition, steps, and precautions of a drawing and drawing mold, which is also related to wire drawing machines. The introduction is as follows.
The definition of wire drawing mold: In wire drawing, according to the size of the blank and wire, the working parameters such as drawing pass, wire drawing die hole size and shape are determined, so it can also be called drawing program or drawing. The formulation of the route.
Drawing molds can be divided into single-pass drawing and multi-pass drawing. The difference between the former and the latter lies in whether a wire drawing is passed through a mold or through a few or a dozen when drawing a wire drawing machine. The drawing of one mold, if it is a single-pass drawing mold, is a multi-pass drawing mold. Multi-pass drawing moulds can also be divided into sliding continuous multi-pass drawing moulding and non-sliding continuous multi-pass drawing moulding.
The steps of drawing the molds are: selecting the blanks—determining the number of intermediate annealing—determining the extension of the drawing passes and the distribution passes—checking with the mold.
Drawing mold precautions are:
(1) The fitting parameters should be adapted to the main parameters of the drawing machine.
(2) As long as the drawing process is stable, use metal's plasticity as fully as possible, and use the least number of drawing passes to increase the productivity of drawing.
(3) The extension coefficient of the pass should be reasonably distributed to ensure a good surface quality, a correct cross-sectional shape, and an accurate size.
Finally, we will talk about the selection principles of silk blanks.
The selection principles of the filament blanks are:
(1) The size of the blank should ensure the mechanical properties and surface quality of the finished product.
(2) The outer shape of the blank must include the shape of the drawn finished filament because the drawing deformation is a reduction in section deformation.
(3) Each part of the billet should be subjected to equal elongation and deformation as much as possible, and it should be in contact with all parts of the die hole at the same time, and be uniformly compressed to avoid affecting the accuracy of the shape of the drawn product.

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