Roller type continuous cold roll forming method for Z-shaped steel sheet pile

Abstract

The invention discloses a roller type continuous cold roll forming method for a Z-shaped steel sheet pile. The method comprises the steps of feeding, uncoiling, flattening, roller type continuous coldbending deformation, finishing, cutting and the like; and a lock hook is formed through a descending hooking method. The method is reasonable is design and clear in logic; one set of product mold canbe used for producing various steel sheet pile products; side vertical rollers are not needed during lock hook deformation, so that torque is saved, and energy consumption is reduced; unit potentialis released, the specifications of machinable products are expanded, the market adaptability is high; the product specification exchange speed is high, and the labor cost is reduced; and the market application of the cold-bending steel sheet pile is expanded, and the variety range of the steel sheet pile is further expanded.

Description

technical field [0001] The invention relates to the technical field of metal building material production and manufacturing, in particular to a roll-type continuous cold-bending forming method of a Z-shaped steel sheet pile. Background technique [0002] Steel sheet pile is a steel structure that can be freely combined to form a continuous and compact retaining wall or water retaining wall, and linkage devices can be set on its edges. [0003] Germany developed and produced steel sheet piles in 1902, and it has a history of more than 100 years. The original steel sheet piles were manufactured by hot rolling, and the specifications, length, and weight were severely limited. They were improved in the 1970s. Cold-rolled steel sheet piles came into being. [0004] Due to the unique advantages of cold-rolled steel sheet piles, such as high strength, light weight, good water-proof performance, strong durability, and extremely long service life, especially in flood control, landsl...

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Problems solved by technology

[0005] Z-type steel sheet pile is a special shape of steel sheet pile. Due to the large cross-sectional area and large moment of inertia under the condition of the same weight metal material, it can greatly increase the stiffness of the steel sheet pile wall, reduce structural deformation, and improve the pile sinking effect. Named after the cross-section is similar to the Z shape, it has two locks (hooks, hereinafter referred to as locks) with different shapes, locks a, b and waist c (such as figure 1 shown), the thickness of steel sheet piles can range from 4 to 17 mm. This pile originated from hot-rolled piles, but because hot-rolled piles are limited by specifications, lengths, batches, etc., and the manufacturing cost is high, for this reason, it is thought of using cold forming continuous roll bending method to manufacture

[0006] At present, in the manufacture of Z-shaped steel sheet piles, when forming the lock, according to the design concept of Eurosteel, the upward hooking method is adopted, which requires a set of molds for one product, which requires a large investment and limits small batches. Lightweight, the development of personalized steel sheet piles

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