Method for controlling surface properties of ultra-thin precision stainless steel foil
A technology of stainless steel foil and surface characteristics, applied in the field of steel rolling, can solve the problems of roll surface roughness attenuation, uneven roughness, poor plate shape, etc., achieve the effect of small thickness tolerance fluctuation, meet high quality requirements, and improve product quality
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[0051] As a specific embodiment, the corresponding relationship between roll roughness and surface type, surface roughness and surface gloss can be simply determined according to the following table:
[0052]
[0053] Preferably, in the method for controlling the surface characteristics of the ultra-thin precision stainless steel foil of the present invention, due to the high roughness of the sandblasted surface and the wire drawing surface, the average thickness of the surface of the steel strip must be calculated according to the roughness when calculating the rolling deformation of the finished product, and then Use the average thickness to calculate the amount of deformation, otherwise the hardness of the rolled product will be difficult to meet customer needs.
[0054] Preferably, in the method for controlling the surface characteristics of the ultra-thin precision stainless steel foil of the present invention, the surface hardness of the roller is low due to the adhesi...
Embodiment 1
[0062] The surface of the target finished product is WM, the steel grade is 304 stainless steel, the thickness is 0.02mm, the width is 600mm, the hardness is 270~300Hv, and the surface roughness Ra is 0.35~0.5um.
[0063] According to the hardness requirements of the target finished material, determine the raw material thickness of the finished rolling process. Specifically, a query such as Figure 7 The relationship between the strain and hardness of 304 stainless steel shown in the figure shows that the target hardness of the finished product is 270-300Hv, and the corresponding total deformation of the finished rolling process should be controlled at 9-10%, so based on the total deformation of 9-10% and 0.02mm The target thickness of the finished product can be determined to be 0.022 to 0.0225mm for the raw material thickness of the finished rolling process. Due to the use of sandblasting rollers, the surface roughness is high, and the actual thickness measured will be 3-5u...
Embodiment 2
[0076] The target product is an ultra-thin precision stainless steel foil with a PS surface, a width of 600mm, a steel grade of 316 stainless steel, a hardness of 160-180Hv, a surface roughness Ra of 0.8-1.1um, and a thickness of 0.02mm.
[0077] The rolling plan is: select 316 grade ultra-thin stainless steel with a thickness of 0.05mm and a width of 600mm, use semi-finishing rolls and sandblasting rolls with a roughness Ra of 2.0um to roll the thickness of the raw materials to 0.02mm, and finally anneal After treatment, it meets the requirements of hardness 160-180Hv, including:
[0078] First, the ultra-thin stainless steel with a thickness of 0.05mm was rolled by the SUNDWIG four-column twenty-high rolling mill, and Castrol rolling oil was used for cooling and lubrication during rolling. Secondary rolling to 0.02mm. The rolling process is shown in the table below:
[0079]
[0080] The deformation of the first pass is controlled at 30% to 35%; the rolling speed is con...
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Abstract
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