CN2344106Y - Cold-rolled metal thin plate whose two sides have different surface and roughness - Google Patents

Abstract

The utility model relates to a cold-rolled metal thin plate whose two sides have different surface and roughness. The laser roughened technology is used to make different surface roughness on the surfaces of two work rollers to make the same rolled board provided with an upper surface and a lower surface to satisfy requirements of different processing technology, wherein, for the surface which is suitable for the fluidity of the processing of the metal thin plate, the surface roughness is from 1.0 mum to 3.0 mum, the average diameter of the surface of a dimple is from 100 mum to 250 mum, and the average space of the center of the surface of the dimple is from 150 mum to 350 mum; for the surface which is suitable for favorable coating after the processing of the metal thin plate, the surface roughness is from 0.5 mum to 1.2 mum, the average diameter of the surface of the dimple is from 50 mum to 200 mum, and the average space of the center of the surface of the dimple is from 50 mum to 150 mum.

Description

The two sides has the cold rolled metal thin plate of different surfaces and roughness

The utility model relates to the cold rolled metal thin plate that a kind of cold rolled metal thin plate, especially two sides with certain pattern and roughness has different surfaces and roughness.

The cold rolling sheet metal upper and lower surface of existing tradition roughness is consistent, this class light sheet products often need through the deep-draw moulding and to its surface paint or electroplate after could use.Deep-draw technology and japanning or electroplating technology are different to the roughness requirement of metal sheet surface.The single roughness of conventional metals thin sheet surface just can not satisfy deep-draw and japanning or electroplating technique requirement simultaneously.For meeting the demands, then must increase other technical process, therefore increased cost, make the production process complexity.

The purpose of this utility model provides the cold rolled metal thin plate that a kind of two sides that can satisfy punching press and japanning or electroplating technology simultaneously has different surfaces and roughness.

The technical solution adopted in the utility model is, two surfaces of sheet metal are processed respectively, makes the configuration on two surfaces have surface topography and the roughness that satisfies product coating processing technology needs after punching press and punching press respectively.This is by selecting different surface roughnesses, surface micro-pit average diameter and surface micro-pit center average headway to realize.Wherein in the one side that adapts to the sheet stamping metal flow: surface roughness (Ra) is at 1.0～3.0 μ m; Surface micro-pit average diameter (D) is 100～250 μ m; Surface micro-pit center average headway (Sm) is 150～350 μ m; The one side of good coating after adapting to sheet stamping: surface roughness (Ra) is at 0.5～1.2 μ m; Surface micro-pit average diameter (D) is 50～200 μ m; Surface micro-pit center average headway (Sm) is 50～150 μ m.

After adopting sheet metal of the present utility model, make the deep-draw process of metallic plate pressed part be easier to finish; And improved the deep-draw work efficiency effectively.

For further understanding the purpose of this utility model, structure and feature, below in conjunction with accompanying drawing the utility model is done one and describe, wherein:

Fig. 1 is the sheet metal Sheet Metal Forming Technology schematic diagram of the utility model embodiment.

Fig. 2 is the little hole of the metal sheet surface of the utility model embodiment and convex closure structure and oil storage effect schematic diagram.

Fig. 3 is the rolling operation principle of sheet metal.

Fig. 4 is that the roller surface pattern is to metal sheet surface transfer process schematic diagram.

At first see also Fig. 3 and shown in Figure 4, sheet metal 3 surface topographies and roughness can form by rolling technique shown in Figure 3.At first, utilize the laser roughening technology, according to different surface topographies and roughness requirement, double-working 8 and 9 is up and down carried out hacking to be handled, before rolling the blank plate band is carried out suitable heat treatment, select suitable rolling technological parameter to be rolled on planisher, two rolls 8 and 9 surface topographies and roughness just are transferred to 3 liang of surfaces of thin plate respectively, as shown in Figure 4, for roll 8 surface topography and roughness are transferred to a surface of sheet metal 3.Roll 9 forms different pattern and roughness on another surface of sheet metal 3 in the same manner, has promptly finished the production process of this product.

Two sides wherein of the present utility model has the one side of the cold rolled metal thin plate 3 of different surfaces and roughness in adaptation sheet stamping metal flow:

Surface roughness is at 1.0～3.0 μ m;

The surface micro-pit average diameter is 100～250 μ m;

Surface micro-pit center average headway is 150～350 μ m;

The one side of good coating after adapting to sheet stamping:

Surface roughness is at 0.5～1.2 μ m;

The surface micro-pit average diameter is 50～200 μ m;

Surface micro-pit center average headway is 50～150 μ m.

See also the sheet metal 3 deep-draws processing cylinder type workpiece of the present utility model that utilizes shown in Figure 1 again and be example, for sheet metal 3 punching out are become the cylinder type workpiece, should at first sheet metal 3 be made circular piece, the drawing coefficient of determining according to deep-draw technology is prepared a series of convex concave mould 1 and 4 then.Place a blank holder 2 on circular metal thin plate 3, after every deep-draw once, an end diameter diminishes once, needs more transducer set convex concave mould, changes until serial convex concave mould to finish, and a tube end diameter reaches till the final requirement of technology.

Sheet metal 3 surfaces that contact with punch 1 are bigger one sides of flow of metal in the deep-draw process.By the method for artificial control, design according to the requirement of punching press, i.e. surface roughness (R thin plate 3 surface topographies and roughness _a) at 1.0～3.0 μ m; Surface micro-pit 5 (in Fig. 2) average diameter (D) is 100～250 μ m; Surface micro-pit 5 center average headway (S _m) be 150～350 μ m.Make the little hole 5 and convex closure 6 structures of sheet metal 3 surperficial generation rules, as shown in Figure 2, little hole 5 has the effect that stores lubricating oil 7, guarantee the continuous lubrication function in the deep-draw process, making between sheet metal 3 surfaces and the punch 1 has complete oil film isolated, reduce interface friction force, reduced the flow of metal resistance.Simultaneously, this pattern has been strengthened the cooling effect of 7 pairs of punch 1 of lubricating oil, and punch 1 is withdrawed from the barrel shell of sheet metal 3 shapings easily, so that workpiece is transferred to next punching out station rapidly, has improved the deep-draw work efficiency effectively.

On the other hand, are barrel shell outer surfaces after the deep-draw with die 4 contacted sheet metals 3 surfaces.The surface topography of this face and roughness require low, and the one side of good coating designs after the sheet stamping according to adapting to, i.e. surface roughness (R _a) at 0.5～1.2 μ m; Surface micro-pit 5 average diameters (D) are 50～200 μ m; Surface micro-pit 5 center average headway (S _m) be 50～150 μ m.Like this, two surfaces of same thin plate require just to have different surface topographies and roughness according to different performance.

Claims (1)

1, a kind of two sides has the cold rolled metal thin plate of different surfaces and roughness, it is characterized in that,

The one side that adapts to the sheet stamping metal flow:

Surface roughness is at 1.0～3.0 μ m;

The surface micro-pit average diameter is 100～250 μ m;

Surface micro-pit center average headway is 150～350 μ m;

The one side of good coating after the adaptation sheet stamping:

Surface roughness is at 0.5～1.2 μ m;

The surface micro-pit average diameter is 50～200 μ m;

Surface micro-pit center average headway is 50～150 μ m.

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