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What are the pre-treatment equipment for the frame coating production line?

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What are the pre-treatment equipment for the frame coating production line?

  • Categories:News Center
  • Author:Chason
  • Origin:Chuangzhi Painting
  • Time of issue:2020-09-03
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(Summary description)The frame assembly is composed of stamped parts (longitudinal beams, cross beams, brackets) and casting brackets. The length of the frame assembly is generally between 5 and 12 m; the product is characterized by large dimensions, large quality, and many varieties; if The production capacity is large, and the requirements for mechanized transportation and product assembly methods are relatively high. In view of this, what are the pre-processing equipment for the frame coating production line?

What are the pre-treatment equipment for the frame coating production line?

(Summary description)The frame assembly is composed of stamped parts (longitudinal beams, cross beams, brackets) and casting brackets. The length of the frame assembly is generally between 5 and 12 m; the product is characterized by large dimensions, large quality, and many varieties; if The production capacity is large, and the requirements for mechanized transportation and product assembly methods are relatively high. In view of this, what are the pre-processing equipment for the frame coating production line?

  • Categories:News Center
  • Author:Chason
  • Origin:Chuangzhi Painting
  • Time of issue:2020-09-03
  • Views:
Information

The frame assembly is composed of stamped parts (longitudinal beams, cross beams, brackets) and casting brackets. The length of the frame assembly is generally between 5 and 12 m; the product is characterized by large dimensions, large quality, and many varieties; if The production capacity is large, and the requirements for mechanized transportation and product assembly methods are relatively high. In view of this, what are the pre-processing equipment for the frame coating production line?

pre-treatment equipment
1. Pretreatment equipment
The pre-treatment equipment of the frame coating production line is mainly composed of the chamber body, the working tank, the medicament supplement system (degreaser, meter adjustment, phosphating agent), degreasing system, iron powder removal system, phosphating slag removal system, heat Exchange system (pre-degreasing, degreasing, phosphating), exhaust system, temperature control system, etc. The chamber body is a closed structure, the frame is made of profiles, the wall panel is made of 2 mm thick stainless steel plate, the ceiling of the chamber body is illuminated by fluorescent lamps, and the side walls are equipped with inspection doors and observation windows. The tank body is a fully welded structure, in which the bottom edge of the tank is inclined to one side, the lowest part is provided with a discharge port, and all the corners of the tank body are arc-shaped. All tank walls are made of 304 stainless steel. All working tanks are equipped with auxiliary tanks and filter screens. All pipes are made of stainless steel.
The pump used in the phosphating process adopts a double mechanical seal form, and a sealed pump is set accordingly to improve the service life of the pump. The pumps in the remaining processes all adopt a single mechanical seal.
The working tank is equipped with a stirring device, so that the tank liquid in contact with the surface of the workpiece can be continuously updated to ensure the uniform temperature and concentration of the tank liquid, accelerate the chemical reaction speed on the surface of the workpiece, and improve the quality of pretreatment. The iron dust removal system uses a combination of a hydrocyclone and a magnetic iron dust filter to remove iron dust in the bath. The treated tank liquid automatically returns to the pre-degreasing tank. Set up a dedicated trolley to collect iron dust and transport the iron dust to the outside of the workshop. The phosphating slag removal system consists of a supply pump, settling and separation equipment, a phosphating slag filter press device, and a slagging trolley to realize automatic and continuous slag removal to ensure that the slag content of the phosphating bath is less than 3.0 × 10-4. The supply pump adopts a double mechanical seal horizontal pump. Equipped with slag blowing compressed air pipeline and quick-change joint.

pre-treatment equipment
2. Cathodic electrophoresis equipment
Mainly composed of chamber body, working tank, circulation system (including main circulation system, ultrafiltration circulation system and temperature adjustment circulation system), bath replacement system, anolyte circulation system, paint supply system, UF washing system, sewage collection system and others Control function system and other components. The chamber body is a closed structure, the skeleton is made of profiled material, and the material is carbon steel. The electrophoresis chamber wall is a 2 mm 304 stainless steel plate. The chamber body is equipped with an exhaust fan. The electrophoresis chamber is equipped with a lighting lamp, with access doors and doors It is equipped with electronic door locks, safety protection and alarm devices. The side walls of the chamber are equipped with glass windows, and the electrophoresis chamber is equipped with maintenance channels. The working trough includes the main trough and the auxiliary trough. The trough body is a fully welded structure, the trough bottom is provided with a certain slope, all the corners of the trough body are arc-shaped, the trough body is made of low carbon steel, the inner surface is coated with glass fiber reinforced plastic, in the dry state Withstand DC voltage ≥ 20 000V, safety protection device and safety mechanism are installed on the bottom of the tank, and protection device is installed on the side wall. The tank body of the cleaning tank is a fully welded structure, the bottom side of the tank is inclined, and all the corners of the tank body are arc-shaped. The skeleton is made of carbon steel profiles, and the wall panels are made of stainless steel. The number of paint cycles is not less than 4 times/h. The materials of valves and pipes are all stainless steel.
Adopt roll-type or tube-type, arc-shaped ultrafilter, and set 0 spray washing at the outlet of the electrophoresis tank. The spray cleaning solution for this station is taken from a UF dip tank. The utilization rate of cathodic electrophoretic paint can reach more than 96% and environmental pollution can be reduced. The spare tank is a closed and fully welded structure, the skeleton is a profile, the material is carbon steel, and the wall plate is a carbon steel plate coated with glass fiber reinforced plastic. The anode adopts a tubular anode. The output capacity of the pump can meet the requirements of anolyte circulation. The material of the pump is stainless steel. It is equipped with a flow meter and a flow adjustment switch, and a conductivity meter is installed to automatically control the conductivity of the anolyte. When the membrane tube leaks, it will alarm.
3. Electrophoresis drying room
The drying room type is straight-through, single-channel, intermittent production. The conveying method of the workpiece is a skid conveyor. The heating method of the drying room is convection. The heating section uses a combustion heating device as the heat source of the drying chamber, and uses the heat generated after direct combustion to convectively heat the workpiece. In the heat preservation section, the high-temperature flue gas generated after the waste gas incineration is used as the indirect heating heat source to heat the workpiece. In the convection heating section, air is supplied under the nozzle and suction on the tuyere. The combustion heating device adopts an imported automatic burner with proportional adjustment. The burner has the characteristics of large adjustment ratio, stable temperature adjustment, and high control accuracy. The exhaust gas treatment adopts a direct-fired exhaust gas incineration device, and the burner adopts an imported automatic burner with proportional adjustment. The device has the advantages of high furnace temperature (760 ℃), thorough exhaust gas treatment, small footprint, and convenient operation and maintenance. The generated flue gas is first preheated by the heat exchanger and then used as the convection drying heat source in the heat preservation section through the flue gas heat exchange device. Finally, the flue gas is discharged to the air through the heat exchanger to preheat the air curtain.
Outdoors, meet the environmental protection emission requirements, and make full use of energy.

pre-treatment equipment
4. Strong cold room
The forced cooling chamber is a through-type, composed of a foundation base, a chamber body, a platform, and a ventilation device. The base is welded by channel steel, and the chamber body is welded by galvanized sheet and square steel tube. The square steel pipes are used as the column and beam of the chamber body, and the galvanized sheet is used as the chamber body and wind box wall panels. In winter, if the outdoor air is too cold, a part of the hot air discharged by the exhaust fan can enter the suction port of the blower by adjusting the adjusting gate for the mixing air. After the cold and hot air are mixed, it will be sent to the forced cold room through the medium efficiency filter. , To avoid condensation when the workpiece is too cold. There are two adjustable openings in the suction box at the upper part of the inlet end of the chamber body. During operation, the hot air overflowing from the drying chamber can be discharged from the workshop through a forced cooling exhaust fan.

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Provide customers with all kinds of non-standard coating production lines, coating equipment, environmental protection equipment and other overall solutions. At present, they have been widely recognized in the auto parts industry, furniture industry, musical instrument industry, cookware industry, home appliance industry, hardware industry and other fields. He used to be Honda, BYD, Wuzhou Dragon, Lizhong Wheel, Meishan.   Provide customers with all kinds of non-standard coating production lines, coating equipment, environmental protection equipment and other overall solutions. At present, they have been widely recognized in the auto parts industry, furniture industry, musical instrument industry, cookware industry, home appliance industry, hardware industry and other fields. He used to be Honda, BYD, Wuzhou Dragon, Lizhong Wheel, Meishan.

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