JPS5897402A - Rolling method for bulb plate - Google Patents

Abstract

PURPOSE:To prevent the generation of projecting lines owing to over filling in the end part of a flat face by trimming the outside side surface in the spherical part and the outer end face in the plate part of a material to be rolled which is formed with the spherical part by means of a pair of vertical rolls and passing the material through finishing rolls thereby rolling and molding the same. CONSTITUTION:A material 10' to be rolled which is formed roughly with a sphercial part 11' is passed through a pair of right and left vertical rolls B, B' and the outside surface 11' of the part 11' and the outer end face 13 of a plate part 12 are so trimmed as to have a prescribed width size W; at the same time, the outside side surface 11'' in the spherical part of the material 10' is flattened by the groove bottom surface B1 of one roll B and the outer end face 13 in the flat part 12 of the material 10' is formed in parallel with the other by the groove bottom surface B2 of the other roll B'. Thereafter the material 10 is passed through calibers C2 of the width slightly wider than the width W of said material formed by the roll pair whereby the material is finished with final finishing rolls D, D'. Then the end part 12' in the plate part exists in the range of the pressing surface of the rolls D, D'; therefore the generation of projecting lines is prevented.

Description

[Detailed Description of the Invention] Kinoto Kazutoshi relates to an improvement in the rolling method of Kyuhira cedar III (-M is referred to as valve plate), which is widely used as a part of components such as temples and bridges. be.

Conventionally, valve plates, which have been used for the construction of large structures such as ships and beams, are manufactured by rolling the raw material all the way through the required rolling rolls and rolling it through the final rolling roll. As shown in Fig. 2 (7), the product U) has a protrusion (3) on the upper edge of the flat part (2) caused by the caliber of the rolling roll. This often occurs continuously, and when such products are processed by the customer, the protrusion (3) may become a hindrance during welding, resulting in many inconveniences and lower construction costs. There are problems such as the bulk of the product and the height of both sides of the product.

Considering the formation of certain protrusions, we found that when forming the caliber of the rolling roll to the required dimensions during rolling operations, the mass of the upper roll and lower roll inevitably changes at the final stage as shown in Figure 2 ( The forming protrusion of the upper roll ((rolling) (7! Kaya +1!) with respect to the rolling width V as shown in A)
, 1 narrows -C1 A protrusion (3) corresponding to the gap t is generated on the enclosure where the gap t is generated. Therefore, all you have to do is rub it to eliminate this gap, but due to the structure of the caliber, the above-mentioned minimum gap is required between the upper and lower rolls, and this is the cause of the problem. .

Non-explosion J is the method to eliminate such defects that occur during the rolling of pulp plates, and to improve the pressure of pulp plates that do not cause biting points in the rolling process and do not cause biting points in uniform and accurate dimensions. The purpose is to provide a method of singing.

That is, in the rolling process of a pulp plate, the present invention passes through a caliber in the rolling path - [kneading Cm shape ff1s l + topography stage], and then rolls the plate with a pair of vertical roll calibers having a set plate width. The outer surface of the spherical part and the side end face of the plate part are rolled + 4, and then the final finishing caliber is rolled through finishing rolls with a caliber of 1, so that no protrusions occur on the flat surface due to bulge. Valve 1)
- This made it possible to obtain consecutive results.

According to the method of the present invention, by adding a step of determining the width at the end of the first hardness to the rolling step in the rolling process, the total < ptm
Products with accurate dimensions can be obtained without causing any extrusion phenomenon, and products can be made without any post-processing after rolling, so sandbag costs do not increase and uniformity is achieved. This has the advantage of being able to provide quality products at low prices. Finally, the final finish rolls are formed to have a caliber that is a little generous with respect to the product dimensions, allowing for a completely reasonable roll, which naturally reduces wear and tear on the rolls, which has the advantage of making rolling work more economical. It's also good.

Hereinafter, the uninvented method will be explained with reference to the drawings with reference to the drawings. Figure 1 shows the connection between the material to be rolled and the rolling rolls from the final stage of rolling to the finished product. In the final rolling process, the spherical part 111i serving as a pulp plate has a shape of approximately bV, and the final stage is the rolling process immediately before transferring to the second roll (as shown in FIG. 1a). )'s caliber (C1) (14 is the spherical part in the next step: 11 outwards of II!) and the outer end surface of the plate (1st floor) are rolled with the specified 11 dimensions. A pair of left and right vertical rolls (B) (
In the sizing process according to B) (denoted in %1 figure °C), the outer surface of the spherical part of the rolled material t+01 (1 piece) was flattened in the groove bottom direction (Bl) of one roll (B), etc. Rolled with iM low surface B2) of force roll (b) 1.1 (i flattened l51
1. Since the end face of 11 and 11 end faces are formed parallel to the other side, this denucleated rolled material (14 (shape vertical roll (B)
) (Bo) 14 grooves (B3) (D) The lower corner f is supported and fed to the next roll position 1α without shifting. The final finishing roll pair (D') of the thus sized loaf material 116)
The width W of the product formed by the roll pair is
The force for finishing the IL by following the caliber (C2) with a width slightly wider than
Rolled material 1111))/7) Bar 1. Since the end of the plate portion 11 must be within the range of the pressing surface by the lower roll (D) and the upper roll (D), it is no longer possible to -
There is no engagement phenomenon between the upper and lower rolls, Lt can be raised accurately, and the product (lO) with 'pK obtained is a pulp plate with a normal cross section and external shape as shown in Figure 1 (a). -C is pressed into shape, and the resulting cut product can be supplied to the market (4). And since it is done in this way, even if there is a gap in the caliber forming section 5 by both the upper and lower rolls in the finishing roll section, there is no head between the rotations, and there is no trouble in the rolls. In the later stages of the process, the finishing roll could be used to its fullest extent without interfering with operation.

[Brief Description of the Drawings] The drawings show an embodiment of the uninvented method and a conventional method. Fig. 1 shows the main parts according to the method of the present invention in the order of operation, and Fig. 2 shows the conventional method. This indicates that the 11O)...Product, 1 (way...Rolled material, II!
... Spherical part, ui7... Spherical part outer end surface, (1 odor
... Plate part, ..., 131 ... Outer end [for, (B)
<b)... Vertical roll, (Bl) (B2)... Groove bottom, (01) (02)... Caliber, middle)...
Upper roll for finishing, (B5...Lower roll for finishing. Special K
Masayuki Miki -1J Agent Yoshi Naka -1-1 11

Claims (1)

[Claims] In the pressing process of the valve plate, the caliber of the rolling roll is carefully passed through the bulge at the end of the rolling process.
Using the Caliber Q with a 100mm vertical roll, the outer surface of the spherical part of the material to be rolled and the side end face of the plate part are heated, and then the final finish is applied to the Caliber Q. ft=i side & of a valve plate whose special feature is rolling forming with one roll.