CN104148444A - Control method for T iron type wires and rods - Google Patents

Abstract

The invention discloses a control method for T iron type wires and rods and aims at providing a method for simply, rapidly and efficiently controlling the T iron type wires and rods, so as to ensure that qualified products can be produced. The technical scheme is characterized in that the control method for the T iron type wires and rods sequentially comprises the following steps: (1) checking outer surfaces of the T iron type wires and rods and ensuring that no cracks are formed in the outer surfaces; (2) detecting all indexes of the T iron type wires and rods which are checked and have no cracks in the outer surfaces in the step (1) to enable all the indexes to be in the following range, wherein the diameter phi is 21-30mm, the thickness allowable deviation is phi+/-0.4mm and the hardness is 48-58HRB; (3) detecting the outer surfaces of the T iron type wires and rods to ensure that the surface oval long axis does not exceed the deviation range of phi+/-0.4mm; and (4) marking the detected T iron type wires and rods. The control method belongs to the technical field of round steel.

Description

T iron class line bar control method

Technical field

The invention discloses a kind of line bar control method, specifically, is a kind of T iron class line bar control method, 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 protection 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 field trash that the external factor such as refractory material cause, high field trash 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 method for 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 control method, it is characterized in that, and the method comprises the steps: successively

1) check T iron class line bar outer surface, guarantee outer surface flawless;

2) detecting step 1) check the indices of outer surface flawless T iron class line bar afterwards, make indices within following ranges: diameter phi 21～30mm, thickness permissible variation: φ ± 0.4mm; Hardness: 48～58HRB;

3) detect T iron class line bar outer surface, guarantee that surperficial transverse is no more than deviation range φ ± 0.4mm;

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

Above-mentioned T iron class line bar control method, step 4) 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 method and standard fast and efficiently, 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.

The specific embodiment

Below in conjunction with the specific 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 control method provided by the invention, the method comprises the steps: successively

1) check T iron class line bar outer surface, guarantee outer surface flawless;

2) according to ordinary skill in the art means or industry standard, detecting step 1) check the indices of outer surface flawless T iron class line bar afterwards, make indices within following ranges: diameter phi 21～30mm, thickness permissible variation: φ ± 0.4mm; Hardness: 48～58HRB;

3) detect T iron class line bar outer surface, guarantee that surperficial transverse is no more than deviation range φ ± 0.4mm;

4) 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. a T iron class line bar control method, is characterized in that, the method comprises the steps: successively

1) check T iron class line bar outer surface, guarantee outer surface flawless;

2) detecting step 1) check the indices of outer surface flawless T iron class line bar afterwards, make indices within following ranges: diameter phi 21～30mm, thickness permissible variation: φ ± 0.4mm; Hardness: 48～58HRB;

3) detect T iron class line bar outer surface, guarantee that surperficial transverse is no more than deviation range φ ± 0.4mm;

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

2. T iron class line bar control method according to claim 1, is characterized in that step 4) described putting on is masked as dozen steel seal or mark is listed or glues label or paste imitated card or tint.