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What kind of production environment is needed for high quality SMT steel mesh

Source: Lin Chuan precision article author: Lin Chuan precision time: 2020-02-28 11:31 reading: 1718

SMT steel mesh is the necessary consumables in SMT chip production, and its quality directly affects the pass through rate of SMT. How to produce high-quality SMT steel mesh is the direction that every SMT steel mesh enterprise will always explore. Today, there are many SMT equipment used for the first time in Linchuan precision, and the requirements for the working environment of SMT production equipment are not well understood. Based on this, Shenzhen Zhichi technology has collected some environmental requirements for your reference

   1. Requirements for bearing capacity, vibration and noise of the plant:

SMT production equipment is a high-precision mechatronics equipment, equipment and process materials have certain requirements on environmental cleanliness, humidity and temperature

The bearing capacity of plant floor should be greater than 8kN / m2;

The vibration should be controlled within 70dB;

The maximum value shall not exceed 80dB, and the noise shall be controlled within 70dba.

   2. Lighting:

The ideal illumination level in the workshop is 800 ~ 1200lux, at least not less than 300lux. When the illumination is low, local lighting should be installed in the inspection, measurement, glue scraping and other working areas.

   3. Air cleanliness:

The workshop shall be kept clean, free of dust and corrosive gas. The production workshop should have the cleanliness control, the cleanliness should be controlled above 1 million level, the carbon dioxide content should be controlled below 1000ppm, and the carbon monoxide content should be controlled below 10ppm.

  4. Temperature:

In the dust-free workshop of SMT steel mesh production workshop, there are many precision electronic components in the laser cutting machine. In order to ensure that the cut SMT steel mesh is within the standard error with the design, the indoor temperature should be controlled at 17 ℃~ 28 ℃, and the minimum requirement is 15 ℃~ 30 ℃.

   5, humidity:

Too high or too low humidity will affect the stability of electronic products, too high will lead to material moisture and become unidentified, too low will produce static electricity. Specifically, the humidity in the dust-free workshop of SMT cutting should be controlled at 45% - 70% RH, and the minimum requirement is 30% - 55% RH or 40% - 80% RH.

  6. Power supply:

Generally, single-phase AC220 (220 ± 10%, 0 / 60Hz) and three-phase AC380 (380 ± 10%, 50 / 60Hz) are required. The power of the power supply should be more than twice of the power consumption.

   7. Air source:

According to the requirements of the equipment, the pressure of the air source can be configured. The air source of the factory can be used, or the oil-free compressor can be configured separately. The pressure is generally greater than 7kg / cm2. Therefore, it is necessary to clean and dry the air. Use stainless steel or pressure resistant plastic pipe as air pipe.

The SMT laser cutting machine needs oxygen and the pressure is 1kg / cm2

   8. Anti static:

In SMT steel mesh cutting dust-free workshop, anti-static measures should be taken to prevent static electricity from affecting the stability of precision components. The relevant production equipment should be well grounded. The ground, work table cushion and seat in the production area must have anti-static effect.

   9 exhaust air:

The equipment of SMT laser cutting machine should be equipped with exhaust fan. The dust gas generated by laser cutting needs to be discharged and filtered, and the qualified gas can be discharged to the outside. The minimum flow rate of the exhaust pipe is 500 cubic feet / min (14.15 m3 / min)

The above is the introduction of "what kind of production environment is needed for high-quality SMT steel mesh". I hope it can help you to choose suppliers of SMT steel mesh enterprises.


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