CN104048698A - T iron type wire and bar control process - Google Patents

Abstract

The invention discloses a T iron type wire and bar control process, and aims at providing a process which easily, rapidly and efficiently controls T iron type wires and bars so as to ensure that qualified finished products are produced. According to the technical scheme, the T iron type wire and bar control process sequentially includes the following steps of firstly, detecting the outer surfaces of the T iron type wires and bars so that it can be ensured that no cracks exist in the outer surfaces and the surface ellipse long axes do not exceed the diameter permission deviation range of diameter+/-0.4 mm; secondly, detecting various indexes of the T iron type wires and bars where no cracks exist in the outer surfaces through detection in the first step, and enabling the various indexes to be within the diameter range of 31 mm to 44 mm, the diameter permission deviation range of diameter+/-0.4 mm, and the hardness range of 48 HRB to 58 HRB; thirdly, marking the detected T iron type wires and bars. The T iron type wire and bar control process belongs to the technical field of round steel.

Description

T iron class line bar is controlled technique

Technical field

The invention discloses a kind of line bar and control technique, specifically, is that a kind of T iron class line bar is controlled technique, belongs to round steel technical field.

Background technology

In special steel steel, wire rod and bar steel have occupied very most ofly, and it is widely used in automobile industry and industrial machine, electric instrument parts and civil construction field etc.From the later stage eighties 20th century, earth environmental issue has become the most important problem in the world, therefore to the most important requirement of wire rod and bar steel characteristic, be to make parts miniaturization and lightweight by improving intensity, and be processed as by omitting manufacturing procedure and the heating of parts the discharge capacity that the ways such as cold working are cut down carbon dioxide.In addition, also more and more stronger to the requirement of environment and conservation of resources, as required, reduce discharge to environmental pollutants and reduce the use amount etc. of rare metal.In addition, automobile market just changes a lot at present, and further reducing manufacturing cost has become than in the past even more important problem.

Especially, because wire rod and bar steel can not be avoided depending on unduly of automobile industry, therefore the new problem as future is to open up new market and new product, as exploitation nuclear power generation, solar electrical energy generation, wind power generation equal energy source field wire rod and bar steel, or ocean development wire rod and bar steel.

When actively pushing forward steel high strength, not only the distinctive characteristic of the steel such as toughness and ductility is a large problem, and to hinder the increase of the imperfection sensitivity of steel high strength development be also a large problem, it is very important therefore eliminating surface and interior detail microdefect.

Therefore,, when reducing the snotter that the external factor such as fire resistive material cause, high snotter assessment technique and the inspection technology of exploitation repeatability is very important.

Summary of the invention

For the problems referred to above, the object of the present invention is to provide a kind of simply, control fast and efficiently the technique of T iron class line bar, to guarantee to produce qualified finished product.

For this reason, last technical scheme provided by the invention is such: this T iron class line bar is controlled technique, it is characterized in that, this technique comprises the steps: successively

1) check T iron class line bar outside surface, guarantee that outside surface flawless and surperficial transverse are no more than diameter permissible variation scope φ ± 0.4mm;

2) detecting step 1) check the indices of outside surface flawless T iron class line bar afterwards, make indices within following ranges: diameter phi 31～44mm, diameter permissible variation: φ ± 0.4mm; Hardness: 48～58HRB;

3) detect rear T iron class line bar and put on sign.

Above-mentioned T iron class line bar is controlled technique, step 3) described putting on is masked as dozen steel seal or mark is listed or glues label or paste imitated card or tint

Compared with prior art, technical scheme tool provided by the invention has the following advantages:

1, the invention provides technical scheme, for controlling T iron class line bar, provide a kind of simple, control fast and efficiently technique and standard, to guarantee to produce qualified finished product.

2, technical scheme provided by the invention, without professional technique operating personnel and special large-scale checkout equipment, has been saved production cost.

Embodiment

Below in conjunction with embodiment; to the most further detailed description of claim of the present invention; but do not form any limitation of the invention, the modification of the limited number of time that anyone makes within the scope of the claims in the present invention, still within claim protection domain of the present invention.

Embodiment 1

A kind of T iron class line bar provided by the invention is controlled technique, and this technique comprises the steps: successively

1) check T iron class line bar outside surface, guarantee that outside surface flawless and surperficial transverse are no more than diameter permissible variation scope φ ± 0.4mm;

2) according to ordinary skill in the art means or industry standard, detecting step 1) check the indices of outside surface flawless T iron class line bar afterwards, make indices within following ranges: diameter phi 31～44mm, diameter permissible variation: φ ± 0.4mm; Hardness: 48～58HRB;

3) detect rear T iron class line bar and put on sign

Specifically, described put on to be masked as beat steel seal or mark and list or glue label or paste imitated card or any sign that can distinguish with the T iron class line bar not detecting such as tint.

Claims (2)

1. T iron class line bar is controlled a technique, it is characterized in that, this technique comprises the steps: successively

1) check T iron class line bar outside surface, guarantee that outside surface flawless and surperficial transverse are no more than diameter permissible variation scope φ ± 0.4mm;

2) detecting step 1) check the indices of outside surface flawless T iron class line bar afterwards, make indices within following ranges: diameter phi 31～44mm, diameter permissible variation: φ ± 0.4mm; Hardness: 48～58HRB;

3) detect rear T iron class line bar and put on sign.

2. T iron class line bar according to claim 1 is controlled technique, it is characterized in that step 3) described putting on is masked as dozen steel seal or mark is listed or glues label or paste imitated card or tint.