Production technology for stainless steel dot matrix friction plate

Abstract

The invention discloses a production technology for a stainless steel dot matrix friction plate and belongs to the technical field of optical chemical etching. The production technology comprises the following working procedures of: designing a plate, wherein the diameter of each round dot on the plate is 0.198mm; performing polish-brush treatment on a stainless steel base plate in a large area manner; performing silk-screening on the surface of the base plate for the second time, and drying photo-sensitive resist; exposing a film substrate coated on a photo-sensitive resist membrane layer of the base plate, wherein a light supplementation plate is arranged between a light source of an exposure machine and a base plate to be photo-sensed; developing, fixing and drying the film substrate; baking and firming a membrane at high temperature; dangling the base plate to be etched upside down in the air, etching the base plate through a lower sprayer of an etching machine, wherein etching liquid adopts liquid ferric trichloride with 46 percent of ferrous ions Fe<3+>; removing the membrane from the etched plate, and flushing and drying the membrane. Furthermore, after the step of firming the membrane and before the step of etching the base plate, a protection membrane layer is coated on the back of the base plate, so that the back of the plate is intact. The large-area stainless steel dot matrix friction plate obtained by using the production technology disclosed by the invention is high array-round-dot uniformity consistency, single-surface etching resistance, small light intensity error, high etching speed and god benefits.

Description

【Technical field】 [0001] The invention relates to a production process of a stainless steel lattice friction plate, belonging to the technical field of photochemical etching. 【Background technique】 [0002] Etch array dots with a diameter and height of 0.04-0.06mm and 0.10-0.12mm on the surface of 304 stainless steel with a large area (500×400mm) to form a friction plate. Sexual problems, the error should be controlled within ±0.01mm. [0003] Usually, the stainless steel etching process is mainly double-sided (surface and back) etching, and thin materials are mostly used, and the etching depth is about 0.05mm. If it is necessary to make a stainless steel lattice friction plate with a single-sided etching depth of 0.10-0.12mm and a dot diameter of 0.04-0.06mm, and the area of ​​the plate is as large as 500×400mm, it cannot be completed by conventional stainless steel etching technology. There are following deficiencies: [0004] 1. During the single-side etching process, ...

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Problems solved by technology

[0004] 1. During the single-sided etching process, due to the long etching time, the resist layer (photosensitive adhesive) will produce floating glue, which will cause the product to be scrapped, and there is a problem of uneven distribution of dots on the whole board

[0005] 2. Large-area exposure, there is a big difference in light intensity between the center of the light source and the edge around the board, resulting in a high failure rate of semi-finished products after exposure

[0006] 3. Etching is performed according to the conventional process, and the uniformity of the dots in the full board array cannot be achieved.

[0008] 5. There is damage on the back of the product after one-sided etching, which affects product quality

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