To calculate the corrosion cost of our daily use of an etching machine for 8 hours a day, first determine which process we choose to corrode? According to the process, we determine which equipment is included in a set of etching machines, and then calculate the cost based on the total price of the total energy consumption of the equipment for 8 hours.

The first step, the choice of process

     The etching process is selected according to the product type, and the etching process is divided into three types: dry film process; photosensitive process; silk screen process. So how do we distinguish what process to choose? What are the product types? Conventional products that currently use the etching process (here, stainless steel corrosion processing is taken as an example), the products produced by the corrosion processing of stainless steel are also very diverse: common products are marked signs, billboards, lighting, tea nets, bean nets. , filter net, speaker net, badge, lampshade, case, dial, strap, cutter, embossed plate, gear, mechanical parts, door panel, window, elevator panel, decorative panel, cup, rice cooker liner, round tube, Square tube, letter box, razor, sword, heating sheet, heat sink, skid plate, nail chip, car welcome pedal, crafts, mask, bearing, key, incense burner, etc. These products can be summarized in four types, metal metal single-sided corrosion; metal metal shaped parts surface corrosion; metal metal double-sided corrosion; metal metal hollow corrosion; in these four types of metal metal double-sided corrosion, metal metal shaped parts surface Corrosion and metal metal hollow corrosion can only choose the photosensitive process to produce and process; metal metal single-sided corrosion can choose three processes to produce, if the batch line is relatively large, we often use the silk screen process, the variety of quality requires high choice of photosensitive Process, the variety is not much quality requirements, we can choose the self-adhesive process to produce.

The second step, the choice of equipment

1. Equipment required for dry film process: engraving machine, etching machine;

2. Equipment required for photosensitive process: coating machine, oven, exposure machine, developing machine, etching machine, washing machine;

3. Equipment required for silk screen printing: screen, etching machine, cleaning tank.

The third step, positioning the product and 8 hours of production

Here we take the signage as an example. We all know that signage has played a wide-ranging role in our lives. It usually brings a lot of convenience to our life in terms of house number, signpost direction, text guidance, etc. According to its use, we can judge that its characteristics are diversity. There are differences in the logos of almost every product. So here we choose the most suitable photosensitive process for production and processing. There are coating machines, ovens, exposure machines, developing machines, etching machines, and washing machines.

We calculate each frame with a size of 200*300mm, and can produce 1300 pieces in 8 hours of photosensitive equipment production. Then we can calculate the cost by calculating the total cost.

Coating machine price cost: 8 yuan electricity (1kw / h power), consumables is about 100 yuan; (electricity unit price is 1 yuan)

Roasting box price cost: 24 yuan electricity fee (3kw / h), no consumables costs;

The cost of the developing machine: 16 yuan electricity (2kw / h), consumables 10 yuan;

Exposure machine price cost: 16 yuan electricity fee (2kw / h), consumables 20 yuan;

Etching machine price cost: 80 yuan electricity fee (10kw / h), consumables 700 yuan;

The cost of the washing machine: 32 yuan electricity (4kw / h), consumables 15 yuan.

Cost unit price calculation, total cost divided by total quantity: (8+100+24+16+10+16+20+80+700+32+15) yuan 1300 pieces=0.78 yuan/piece