Wire rod pickling-free drawing production process

A production process, no pickling technology, used in manufacturing tools, metal processing equipment, metal extrusion cleaning equipment, etc., can solve the problems of accelerated hydrogen residue discharge, low production efficiency, environmental impact, etc., to solve production costs and The effect of environmental pollution, improving production efficiency and improving drawing quality

Inactive Publication Date: 2019-06-28
安徽省力通稀土钢缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many problems in the pickling process, such as the high cost of pickling, the need for a large amount of water to rinse the residual acid and ferrous chloride on the pickled wire rod, hot rinsing to accelerate the discharge of residual hydrogen, and the volatilization of acid mist during the treatment process A series of problems such as impact on the environment and low production efficiency make the industry have to find an alternative to pickling

Method used

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  • Wire rod pickling-free drawing production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A production process for wire rod and wire rod without pickling and drawing, comprising the following steps:

[0024] Step 1. Tension tension leveling and shelling: Select the wire rod of the corresponding specification and place it on the pay-off rack, use the tension tension leveler to remove the coarse oxide layer on the outside of the wire rod, and obtain the shelled steel rod, then use the I-shaped wheel for random collection Wire;

[0025] Step 2. Centrifugal shot blasting: evenly disperse the shelled steel bars of the whole plate, select wear-resistant metal balls with a diameter of 0.4mm at a throwing speed of 85m / s and a throwing frequency of 55Hz, and the centrifugal shot blasting time is 18min , and then remove the fine iron oxide skin on the surface of the steel bar;

[0026] Step 3. Ultrasonic cleaning + high-pressure water washing: Use an ultrasonic cleaning pool with tap water as the washing liquid to clean the dirt on the surface of the steel bar. The c...

Embodiment 2

[0030] On the basis of Embodiment 1, some improvements are made. The improvement points are: in step 1, the shelling wheel set of the tension tension leveler adopts a five-roller centralized wheel set, and the shelling wheel set is provided with three groups, three sets of shelling wheels The group is arranged in a 120° space, which can effectively remove the oxide layer on the surface of the wire rod at 360°, and increase the number of peeling times to reduce the thickness of each peeling to ensure the internal structure of the wire rod.

Embodiment 3

[0032] The improvement done on the basis of Example 2 is: in step 2, the shot blasting process is divided into positive and negative two-way shot blasting processes, firstly carry out forward shot blasting for 10s, and then carry out reverse shot blasting for the same time, so that The entire circumferential surface of the steel rod is thrown by wear-resistant metal balls to ensure that the oxide layer on the outer surface of the peeled wire rod is further removed. Combined with ultrasonic cleaning + high-pressure water washing, it provides conditions for the later coating of the boride layer.

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Abstract

The invention discloses a wire rod steel wire rod pickling-free drawing production process, and belongs to the technical field of wire rod pickling-free drawing in steel strand production. According to the production process, an energy-saving and pollution-free production line is formed and a traditional pickling and phosphating production process is replaced by sequentially carrying out tension straightening and shelling, centrifugal shot blasting, ultrasonic cleaning, high-pressure water washing, boronizing layer coating and drawing, specifically, an oxide layer on the outer surface of the wire rod is effectively removed by using three five-roller centralized tension straightening machines simultaneously; in the process of centrifugal shot blasting, the surface of the wire rod achieves acorresponding glossiness level convenient for the boronizing layer coating by adopting a forward and reverse mode, a high speed mode and a high frequency mode; the wire rods preheated when the boronizing layer is coated, so that the production efficiency is greatly improved and the adsorption the surface of the wire rod to the boronizing liquid is enhanced; and the surface of the wire rod is quickly dried at high speed and high temperature in a direction perpendicular to the surface of the steel rod after coating, and the boronizing layer is prevented from absorbing water, so that the drawingquality is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of pickling-free drawing of wire rods in the production of steel strands, and in particular relates to a production process of wire rods and wire rods without pickling and drawing. Background technique [0002] In the metal products industry, wire rods (high-speed wire rods) need to be descaled before drawing. As a traditional chemical rust removal method, pickling technology has been used up to now because of its simple operation, clean surface and stable quality after pickling. There are many problems in the pickling process, such as the high cost of pickling, the need for a large amount of water to rinse the residual acid and ferrous chloride on the pickled wire rod, hot rinsing to accelerate the discharge of residual hydrogen, and the volatilization of acid mist during the treatment process A series of problems such as affecting the environment and low production efficiency have forced the industry to fi...

Claims

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Application Information

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IPC IPC(8): B21C43/02B21C43/04B21C9/00
Inventor 徐德贵章兆俭
Owner 安徽省力通稀土钢缆有限公司
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