TWI499692B - For the use of steel plate hot dip bath immersed roller - Google Patents

Description

Immersion roller for hot dip plating of steel plate

The present invention relates to a roller, and more particularly to an immersion roller for a hot dip coating of a steel sheet.

Referring to Figure 1, there is shown a schematic view of a conventional steel sheet being plated in a hot dip plating bath. As shown in FIG. 1, when the conventional steel sheet 50 is plated in the hot dip plating tank 60, the support is mainly provided through the roller 70 in the hot dip plating tank 60, and the surface is evenly coated by the conveyance of the roller 70. The purpose of the plating solution. However, since the contact manner between the conventional roller 70 and the steel plate 50 is in surface contact, the slag particles 80 easily enter between the steel plate 50 and the roller 70 to rub the steel plate 50, and the surface of the steel plate 50 is formed with embossing marks or roll marks. (Roll Mark), which in turn leads to a significant increase in the rate of defective hot-dip coated steel sheets.

Therefore, it is necessary to provide an innovative and progressive immersion roller for hot dip plating of steel sheets to solve the above problems.

The present invention provides a immersion roller for a hot dip plating bath of a steel sheet, comprising: a first end portion; a second end portion opposite to the first end portion; and a groove portion at the first end portion The groove portion has a plurality of ridges and a plurality of embossments, and each of the ridges is located between the ridges, and each of the ridges and each of the ridges has a circle An arc convex surface and a circular arc concave surface, each of the circular arc concave surfaces connecting the circular arc convex surfaces.

The invention can minimize the contact area between the immersion roller and the steel plate without reducing the supporting force, so as to prevent the slag particles from entering between the steel plate and the immersed roller and scratching the steel plate table. The surface can greatly reduce the defect rate of hot-dip coated steel sheets.

The embodiments of the present invention can be more clearly understood, and the objects, features, and advantages of the present invention will become more apparent. The details are as follows.

10‧‧‧Immersion roller

11‧‧‧ First end

12‧‧‧ second end

13‧‧‧ Groove

131‧‧‧ embossing

131a‧‧‧Arc convex

132‧‧‧ dent

132a‧‧‧ arc concave

133‧‧‧Connection plane

D‧‧‧ spacing between vertices

H‧‧‧ Height difference between the apex of the arc convex surface and the lowest point of the arc concave surface

P1‧‧‧ apex

P2‧‧‧ lowest point

Radius of curvature of R1‧‧‧ arc convex surface

Radius of curvature of R2‧‧‧ arc concave surface

W‧‧‧Width

20‧‧‧Hot-dip coated steel plate

50‧‧‧ steel plate

60‧‧‧ hot dip plating tank

70‧‧‧Roller

80‧‧ ‧ slag

1 is a schematic view showing a conventional steel plate in a hot dip plating bath; FIG. 2 is a schematic view showing the structure of the immersion roller used in the hot dip plating bath of the present invention; and FIG. 3 is a view showing the immersion roller supporting hot dip coating of the present invention. FIG. 4 is a schematic view showing a circular arc concave surface of the present invention connected to a circular convex surface by a connecting plane; and FIG. 5 is a schematic view showing a circular arc concave surface of the present invention connected to a circular convex surface in a tangential manner.

2 is a schematic view showing the structure of the immersion roller for the hot dip plating tank of the steel sheet of the present invention. Figure 3 is a schematic view showing the immersion roller of the present invention supporting a hot dip coated steel sheet. Referring to FIG. 2 and FIG. 3, the immersion roller 10 for a hot dip coating of a steel sheet of the present invention includes a first end portion 11, a second end portion 12 and a groove portion 13. The second end portion 12 is opposite the first end portion 11.

The groove portion 13 is located between the first end portion 11 and the second end portion 12, and the groove portion 13 has a plurality of ridges 131 and a plurality of ridges 132. The ridges 131 are used to support a hot dip coated steel sheet 20, and each of the embossments 132 is located between the ridges 131 for discharging between the hot dip coated steel sheet 20 and the immersion roller 10 of the present invention. Plating solution.

Fig. 4 is a view showing the arc-shaped concave surface of the present invention connected to a circular convex surface by a connecting plane. Referring to FIG. 2, FIG. 3 and FIG. 4, each of the ridges 131 has a circular arc surface 131a, and each of the circular convex surfaces 131a has a vertex P1. In this embodiment, in order to enable each of the ridges 131 to support the hot-dip coated steel sheet 20 in a point contact manner, preferably, each of the circular convex surfaces 131a has a radius of curvature R1 of 0.1 mm to 1.5 mm. The pitch D between the vertices P1 is 0.5 mm to 10 mm.

Each of the concave grooves 132 has a circular arc concave surface 132a, and each of the circular concave surfaces 132a connects the circular convex surfaces 131a, and each of the circular concave surfaces 132a has a lowest point P2. In this embodiment, in order to enable each of the concave stripes 132 to smoothly discharge the plating solution between the hot-dip coated steel sheet 20 and the immersion roller 10 of the present invention, preferably, the radius of curvature R2 of each of the circular arc-shaped concave surfaces 132a The height difference H between 0.15 and 1.5 mm and the apex P1 of each of the circular arc faces 131a and the lowest point P2 of each of the arcuate concave faces 132a is 0.2 mm to 3 mm.

Referring to FIG. 4, in the embodiment, in order to further increase the space for discharging the plating solution, each of the circular arc concave surfaces 132a may connect the circular arc convex surfaces 131a with a connecting plane 133. Each of the connecting planes 133 is tangent to each of the arcuate concave surfaces 132a and the arcuate convex surfaces 131a, and each of the connecting planes 133 has a width W. Preferably, each of the widths W ranges from 0<W≦6.5mm. .

Alternatively, referring to Fig. 5, it is a schematic view showing that the arcuate concave surface of the present invention is connected to the arcuate convex surface in a tangential manner. As shown in FIG. 5, in another embodiment, each of the arcuate concave surfaces 132a may also connect the arcuate convex surfaces 131a in a tangential manner to increase the space for each of the concave grooves 132 to discharge the plating solution.

Referring to FIG. 3, the present invention can minimize the contact area between the immersion roller 10 and the hot-dip coated steel sheet 20 without reducing the supporting force to prevent the slag particles from entering the hot-dip coated steel sheet. The surface of the steel sheet is scratched between the 20 and the immersion roller 10, and the defect rate of the hot-dip coated steel sheet 20 can be greatly reduced.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the scope of the present invention. The scope of the invention should be as set forth in the appended claims.

10‧‧‧Immersion roller

11‧‧‧ First end

12‧‧‧ second end

13‧‧‧ Groove

131‧‧‧ embossing

131a‧‧‧Arc convex

132‧‧‧ dent

132a‧‧‧ arc concave

D‧‧‧ spacing between vertices

H‧‧‧ Height difference between the apex of the arc convex surface and the lowest point of the arc concave surface

P1‧‧‧ apex

P2‧‧‧ lowest point

Claims (6)

A immersion roller for a hot dip plating tank of a steel sheet, comprising: a first end portion; a second end portion opposite to the first end portion; and a groove portion at the first end portion and the first portion Between the two ends, the groove portion has a plurality of ridges and a plurality of embossments, and each of the ridges is located between the ridges, and each of the ridges and each of the ridges has a circular arc surface and A circular arc concave surface, each of the circular concave surfaces is connected to each of the circular convex surfaces by a connecting plane, and each of the connecting planes is tangent to each of the circular arc concave surfaces and each of the circular arc convex surfaces. The immersion roller for the hot dip coating of the steel sheet according to claim 1, wherein each of the circular convex surfaces has a radius of curvature of 0.1 mm to 1.5 mm. The immersion roller for the hot dip plating tank of the steel sheet according to claim 1, wherein each of the circular arc concave surfaces has a radius of curvature of 0.1 mm to 1.5 mm. The immersion roller for a hot dip coating of a steel sheet according to claim 1, wherein each of the arcuate convex masks has an apex, and the distance between the vertices is 0.5 mm to 10 mm. The immersion roller for a hot-dip plating tank of a steel sheet according to claim 1, wherein each of the arc-shaped convex masks has an apex, and each of the arc-shaped concave masks has a lowest point, and the apex of each of the circular convex surfaces and each of the circular concave surfaces The height difference between the lowest points is 0.2 mm to 3 mm. The immersion roller for a hot-dip plating tank of a steel sheet according to claim 1, wherein each of the joint planes has a width W, and each of the widths W ranges from 0 < W ≦ 6.5 mm.