Light truck painting process adopting water-based BIB2 matched with solvent type 1K varnish

Abstract

The invention provides a light truck painting process adopting water-based BIB2 matched with solvent type 1K varnish and belongs to the technical field of vehicle paint spraying. The process is characterized by including the steps of wiping clean, blowing with deionized wind, painting B1 outer surface, painting B2 inner surface, painting B2 outer surface, performing hot flash off, conducting forced cooling, painting IK varnish, levelling and drying; the B2 inner plate painting process also serves as the normal-temperature levelling process of B1 outer plate paint film, the levelling time is 600-720s; the hot flash off process is divided into the dewatering part and the high-temperature flash off part, the dewatering temperature is 40-45 DEG C, the dewatering time is 210-240 s, the high-temperature flash off temperature is 80-90 DEG C, and the high-temperature flash off time is 210-240 s; after the hot flash off process is finished, 1K varnish painting is conducted. The process requiresless investment, the work period is short, the place for automobile improvement covers a small area, the production rhythm is fast, and the energy consumption is small.

Description

technical field

[0001] The invention discloses a water-based B1B2 and solvent-based 1K varnish spraying process for light truck coating, belonging to the technical field of car paint spraying. Background technique

[0002] B1B2 spraying process is a spraying process without intermediate coating, and it is a short process that is more compact than the traditional 3C2B and 3C1B process in the painting spraying process. Water-based paint is a kind of paint that uses water as the main solvent. Compared with solvent-based paint, it can greatly reduce the VOCs content in painting exhaust gas, and realize the green painting of light truck body.

[0003] At this stage, the mainstream water-based spraying process in the paint shop of an automobile factory roughly includes the traditional 3C2B (three-coating and two-baking) process, the compact 3C1B (three-coating and one-baking) process, the B1B2 (intermediate coating-free) process, and the 1C1B (Monocoat single-coating) process. to...

Examples

Embodiment 1

[0035] The technological process of paint spraying for light trucks is wiping, deionized wind blowing, B1 outer surface spraying, B2 inner surface spraying, B2 outer surface spraying, hot flash drying, forced cooling, 1K varnish spraying, leveling, and baking Dry;

[0036] After the outer surface of B1 is sprayed, the inner surface of B2 is sprayed. The process of spraying the inner surface of B2 is also the normal temperature leveling process of the paint film on the outer surface of B1. The leveling time is 660s; after the inner surface of B2 is sprayed, then the outer surface of B2 is sprayed. ;The hot flash drying process is divided into two parts: dehydration and high temperature flash drying. The dehydration temperature is 42.5°C, the dehydration time is 225s, the high temperature flash drying temperature is 85°C, and the high temperature flash drying time is 225s; after the hot flash drying is completed, 1K varnish is applied Spraying, leveling at room temperature for 4...

Embodiment 2

[0038] The technological process of paint spraying for light trucks is wiping, deionized wind blowing, B1 outer surface spraying, B2 inner surface spraying, B2 outer surface spraying, hot flash drying, forced cooling, 1K varnish spraying, leveling, and baking Dry;

[0039] After the outer surface of B1 is sprayed, the inner surface of B2 is sprayed. The process of spraying the inner surface of B2 is also the normal temperature leveling process of the paint film on the outer surface of B1. The leveling time is 680s; after the inner surface of B2 is sprayed, then the outer surface of B2 is sprayed. ;The hot flash drying process is divided into two parts: dehydration and high temperature flash drying. The dehydration temperature is 42°C, the dehydration time is 230s, the high temperature flash drying temperature is 84°C, and the high temperature flash drying time is 230s; after the hot flash drying is completed, 1K varnish is applied Spraying, leveling at room temperature for 440...

Embodiment 3

[0041] The technological process of paint spraying for light trucks is wiping, deionized wind blowing, B1 outer surface spraying, B2 inner surface spraying, B2 outer surface spraying, hot flash drying, forced cooling, 1K varnish spraying, leveling, and baking Dry;

[0042] After the outer surface of B1 is sprayed, the inner surface of B2 is sprayed. The process of spraying the inner surface of B2 is also the normal temperature leveling process of the paint film on the outer surface of B1. The leveling time is 640s; after the inner surface of B2 is sprayed, then the outer surface of B2 is sprayed. ;The hot flash drying process is divided into two parts: dehydration and high temperature flash drying. The dehydration temperature is 43°C, the dehydration time is 220s, the high temperature flash drying temperature is 86°C, and the high temperature flash drying time is 240s; after the hot flash drying is completed, 1K varnish is applied Spraying, leveling at room temperature for 460...

technical field

[0001] The invention discloses a water-based B1B2 and solvent-based 1K varnish spraying process for light truck coating, belonging to the technical field of car paint spraying. Background technique

[0002] B1B2 spraying process is a spraying process without intermediate coating, and it is a short process that is more compact than the traditional 3C2B and 3C1B process in the painting spraying process. Water-based paint is a kind of paint that uses water as the main solvent. Compared with solvent-based paint, it can greatly reduce the VOCs content in painting exhaust gas, and realize the green painting of light truck body.

[0003] At this stage, the mainstream water-based spraying process in the paint shop of an automobile factory roughly includes the traditional 3C2B (three-coating and two-baking) process, the compact 3C1B (three-coating and one-baking) process, the B1B2 (intermediate coating-free) process, and the 1C1B (Monocoat single-coating) process. to...

Examples

Embodiment 1

[0035] The technological process of paint spraying for light trucks is wiping, deionized wind blowing, B1 outer surface spraying, B2 inner surface spraying, B2 outer surface spraying, hot flash drying, forced cooling, 1K varnish spraying, leveling, and baking Dry;

[0036] After the outer surface of B1 is sprayed, the inner surface of B2 is sprayed. The process of spraying the inner surface of B2 is also the normal temperature leveling process of the paint film on the outer surface of B1. The leveling time is 660s; after the inner surface of B2 is sprayed, then the outer surface of B2 is sprayed. ;The hot flash drying process is divided into two parts: dehydration and high temperature flash drying. The dehydration temperature is 42.5°C, the dehydration time is 225s, the high temperature flash drying temperature is 85°C, and the high temperature flash drying time is 225s; after the hot flash drying is completed, 1K varnish is applied Spraying, leveling at room temperature for 4...

Embodiment 2

[0038] The technological process of paint spraying for light trucks is wiping, deionized wind blowing, B1 outer surface spraying, B2 inner surface spraying, B2 outer surface spraying, hot flash drying, forced cooling, 1K varnish spraying, leveling, and baking Dry;

[0039] After the outer surface of B1 is sprayed, the inner surface of B2 is sprayed. The process of spraying the inner surface of B2 is also the normal temperature leveling process of the paint film on the outer surface of B1. The leveling time is 680s; after the inner surface of B2 is sprayed, then the outer surface of B2 is sprayed. ;The hot flash drying process is divided into two parts: dehydration and high temperature flash drying. The dehydration temperature is 42°C, the dehydration time is 230s, the high temperature flash drying temperature is 84°C, and the high temperature flash drying time is 230s; after the hot flash drying is completed, 1K varnish is applied Spraying, leveling at room temperature for 440...

Embodiment 3

[0041] The technological process of paint spraying for light trucks is wiping, deionized wind blowing, B1 outer surface spraying, B2 inner surface spraying, B2 outer surface spraying, hot flash drying, forced cooling, 1K varnish spraying, leveling, and baking Dry;

[0042] After the outer surface of B1 is sprayed, the inner surface of B2 is sprayed. The process of spraying the inner surface of B2 is also the normal temperature leveling process of the paint film on the outer surface of B1. The leveling time is 640s; after the inner surface of B2 is sprayed, then the outer surface of B2 is sprayed. ;The hot flash drying process is divided into two parts: dehydration and high temperature flash drying. The dehydration temperature is 43°C, the dehydration time is 220s, the high temperature flash drying temperature is 86°C, and the high temperature flash drying time is 240s; after the hot flash drying is completed, 1K varnish is applied Spraying, leveling at room temperature for 460...

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