JPS6040602A - Roll marking method of steel shape - Google Patents

Abstract

PURPOSE:To prevent the deformation, opaque, and scratch, etc. of a roll mark for bringing the mark into bold relief by stamping a vertical roll with a roll mark in intaglio and stamping the shoulder part of a product with the roll mark in relief. CONSTITUTION:The backface and the whole inside of a product are rolled by an upper horizontal roll 10 and a lower one 12, and the shoulder and flange parts of product are rolled by left and right vertical rolls 13 and 14. A prescribed roll mark 11 is stamped in intaglio on either of one or the other of rolls 13, 14, or on both rolls 13, 14. The rolling reduction at the shoulder part in finish rolling, is made sufficiently large in accordance with the height of relief of the roll mark.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method of forming and processing roll marks on the surface of a product in rolling shaped copper.

(Prior art) As is well known, for 1 lul, strip, steel sleeper sections, etc., the product type, manufacturer, 6 years of manufacture, etc. are embossed (embossed) on the surface of the product. . These embossed characters and symbols are called roll markings and embossed kerol markings. Shapes for steel sleepers are generally rolled using a double rolling mill as shown in Figure 1, but universal rolling is used in some areas with the aim of reducing roll consumption. A method using the method shown in FIG. 2 has also been proposed.

In either method, two rolling mills are used.
: In this finish rolling, predetermined roll marks are embossed on the shoulder of the product as shown in Figure 3.

In this case, a roll mark is engraved horizontally on a portion of the roll corresponding to the product layer, and a concave portion of the roll is embossed on the product due to the use of the roll. Extend to select the shoulder of the product as the roll mark location.

This is because the shape steel for iron sleepers (1) i9J river method is as shown in Figure 1-4. In other words, the back surface] is the rail R
/ Must be flat and curved - The convex part of the roll marr cannot be raised. -79 again
79 Part 2 is buried in the paving stones, so the roll marks placed on it cannot be read. For this reason, shoulder 3 is the most suitable position for the roll mark.Now, if the inclination angle of the shoulder shown by 0 in Fig. 4 is small, the rolling action of the horizontal roll from the horizontal direction is due to the lift of the roll mark. It is suitable for stock processing and there are no problems. However, in order to improve the strength and rigidity of steel sleeper sections, there is a tendency to increase the height of the product as much as possible, that is, to increase the shoulder inclination angle θ shown in Figure 84.

When the shoulder inclination angle θ increases, the difference in roll circumferential speed of the horizontal roll between the upper and lower portions of the roll mark increases, causing deformation, obscurity, scratches, etc. of the roll mark.

(Objective of the Invention) The object of the present invention is to propose a method for clearly making the roll mark 2 on the shoulder of a steel sleeper section having a large shoulder inclination angle f4≦.

(Structure and operation of the invention) The present invention is directed to the finishing of section steel for iron sleepers with a large shoulder inclination angle/E g
It is characterized by being made uniform and having a roll mark engraved on the vertical roll and a roll mark embossed on the shoulder of the product.

A specific method of the present invention is shown in FIG. 5 below.

Fig. 5 shows the present invention applied to finish rolling of a section steel for iron sleepers. The shoulder and flange parts are rolled with the right vertical roll ↓4. A predetermined roll mark 11 is engraved on one or both of the right vertical rolls i3 and 1.4. Job-1-Pressure 1
The downstream @: of the shoulder in 1 is made sufficiently large to correspond to the raised L2 part of the roll mark.

(Effects of the Invention) According to the pressure of the present invention, the vertical roll diameter difference at the roll mark on the shoulder becomes small, and the roll mark becomes deformed, unclear, and
7)・There were no problems such as scratches, and there was no problem with the shaped steel for iron sleepers.
A clear roll mark of J missing can be easily obtained.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of the conventional rolling method using double rolls for steel sleeper sections, Figure 2 is a schematic diagram of the conventional rolling method using the universal method for steel sleeper sections, and Figure 3 is a schematic diagram of the conventional rolling method using the universal method for steel sleeper sections. FIG. 4 is an explanatory diagram of how to use the section steel for iron sleepers, and FIG. 5 is a detailed explanatory diagram of the present invention. 1 o: l horizontal roll l 1: intaglio roll mark 12 second water roll co. 3.14: Vertical roll skewer 3 separate pieces 4 figures

Claims (1)

[Claims] In the rolling of channel shaped steel such as steel sleeper sections, the finish rolling is universalized and roll marks are engraved on the vertical rolls, resulting in roll marks being embossed on the shoulders of the product. Roll marking method for section steel.