Before-finished-product shared hole type and rolling device for single-thread-rolling thread bar material and rolling method

Abstract

The invention provides a before-finished-product shared hole type and rolling device for a single-thread-rolling thread bar material and a rolling method. According to the before-finished-product shared hole type, an upper rolling groove and a lower rolling groove with the same structure are involved, the upper rolling groove comprises a groove bottom and two side walls, one end of each side wallextends to a groove opening plane of a roller seam, the other end of each side wall is connected with the groove bottom, the groove bottom is formed by connecting a first arc, a second arc and a thirdarc in sequence, the second arc protrudes towards the inner side of the groove bottom and has greater clamping force and friction force to a rolling part, and the rolling part can be effectively prevented from moving back and forth in the axis direction of a rolling roller. Before the finished products are formed, one set of same hole type including box type hole, circular hole, oval hole and circular hole extension hole type devices is adopted, and then different finished product hole types are adopted for rolling standard threaded rebars. The efficient, stable and cost-reduction rolling technology hole type sharing design is provided, frequent replacement of a rack is reduced, the labor intensity is lowered, the process halt time is shortened, and the rolling stability is improved.

Description

technical field [0001] The invention belongs to the technical field of bar and wire process pass design, and in particular relates to a common pass before finished products of a single-line rolling line bar, rolling equipment and a rolling method. Background technique [0002] In the production of rods and wires, in order to meet the product needs of customers, especially when the product demand for large-scale single-line rebar (that is, single-line rolled rebar) is relatively small, the replacement of large-scale products will be more frequent, and frequent The replacement of specifications and loading and unloading of rolling mills will affect the efficiency and stability of rolling. [0003] Therefore, in view of a series of problems such as the small demand for large-size single-wire bar products, frequent specification changes, and rolling mill loading and unloading will affect rolling efficiency and rolling stability, it is necessary to provide a technical solution to...

AI Technical Summary

Problems solved by technology

[0002] In the production of rods and wires, in order to meet the product needs of customers, especially when the product demand for large-scale single-line rebar (that is, single-line rolled rebar) is relatively small, the replacement of large-scale products will be more frequent, and frequent The specification change, rolling mill loading and unloading will affect the roll

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