Several problems should be paid attention to the Production Process for Double color aluminum |insulating glass machine_laminated glass machine_glass washing machine_Aluminum window machine_Ji'nan Zhaoyang Machine Co., Ltd.|NEWS CENTER

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Several problems should be paid attention to the Production Process for Double color aluminum

Date：2013-10-28 Author：zhaoyang Hits：1005

1 sample moderate viscosity foil. In the two-color aluminum processing production, the film is a reasonable choice is the key. The viscosity is too low foil stickers live. Foil is easy to fall off, to bring considerable difficulty spray . Foil viscosity is too large , indicating that the plastic film is more, when the tear film , the easier the adhesive foil on the profile , the profiles affect the surface quality , on the other hand , the choice of film , the possible use of plastic composition and painted components identical or close to , this can reduce the impact of the color of the paint film .

2 Select the width and thickness of the film medium ; Because aluminum processing complex cross-sectional shape , the appearance of the wide and narrow gap is large, easy to fly side blows, reducing foil covering power , affecting the quality of spraying . Film is too narrow , it could not cover , obviously not spraying. On the other hand , the choice of film thickness, as long as the cover , can be flexible , not selected too thick film, because the film is too thick aluminum processing will increase production costs, but is not necessary.

3 film promptly after spraying. Film profiles after spraying should be timely , parked the shorter the better . If the parking time is too long, because the glue dried film , loses viscosity, especially is by winds , foil off, resulting spray with difficulty . Therefore, to ensure the quality of film and the coating , most of the foil after the parking time not more than 16h.

4 Make sure the color of the interface and the dividing line. Aluminum processing before spraying , be sure to use the feature based on profiles and customer requirements ( contract requirements ) , to distinguish between the surface to be sprayed Xu each color is which side of the interface , which is the boundary line , in what position : in general, the inside is light , outside is dark at the interface clarified , boundaries and requirements before color film , the film must not pay attention to the position of mislabeled .

5 film Quality: aluminum processing color film is processed in a key process , film quality has a direct impact on the quality of the surface of aluminum processing , including the following aspects painting : First, do not make the film as much as possible excessive tension film formation , it is not sufficient that the foil is deformed or cut away after the foil is easy to shrink , so that no aluminum foil phenomenon appears across processing ; other hand, the aluminum foil off processing ends , use the blade cut , but can not pull off , otherwise , pull off the foil still shrink ; Second, the film width to match the width of the veneer , under normal circumstances , foil width slightly larger than the width of veneer aluminum processing , if the film is too wide , too much beyond the edges of aluminum processing , when spraying, easily compressed air blowing , if foil is too narrow , you can not completely cover , apparently is not enough ; Fourth veneer boundary edge of the trench , be sure to ; foil pressed into the groove burr otherwise, spraying airflow easy to film blowing , affecting the quality of spraying aluminum processing ; Fifth film , must be pasted foil , to prevent wrinkles, curling , etc. phenomenon ; six for complex cross-sectional shape of the profiles , if a film difficulties, can be divided into two or more film, foil to ensure the quality of coverage ; seven thin wall thickness , or for some other special cantilever larger cross-section aluminum processing, when the film is not too tight , we must be careful not to deform the aluminum processing ; eight for the first time after spraying , aluminum processing the parking time not too long , otherwise it would profiles tables from dust , resulting in foil difficult , thus affecting film quality :

6 strict implementation film processes. Aluminum foil must be processed after the first spray and then paste , not directly after chromating film profiles , it is because the foil with adhesive , if they are directly attached to the foil on the chromium layer , the adhesive will stick to the layer of chromium , or tear the foil , it will be chromium layer , tear , which would greatly reduce the adhesion of the film , and ultimately affect the quality of spraying aluminum processing , resulting film off , the consequences could be disastrous.

7 tear film time . Aluminum processing by the film, after spraying , to tear film , but not immediately after spraying tear film, to control the tear film . - Generally speaking , after spraying after leveling , the film basically freezing , this process can not be less than 10min. Before you tear film tear film . Otherwise , the film is not open, tear film in the process is easy to fall foil aluminum processing , and affect the film quality . On the other hand , when the tear film must act fast to avoid affecting the tear film quality .

8 -color spray aluminum processing order , you need painted two colors, there are two kinds of dark and light colors are bound to exist , there must be sprayed after the first , which must be considered before spraying the first spray color , which color after spray , according to the specific circumstances , if the first light spray , spray after dark , the first spray twice a curing light to go through that twice baked , easy to light-colored baking discolored , if the first spray dark , light , after spraying , then spray after spray before dark on light coverage affected to some extent , in order to cover the dark is necessary to increase the thickness of the film , but the film thickness to a certain extent, but also prone to Tuomo phenomenon . Therefore . In actual production , using the first light after the dark process more feasible .

9 Avoid repeated rework. In the production process of aluminum processing color , due to various factors, rework is inevitable, but will increase each time a cured rework . Speaking on the film . Repeatedly spraying, increasing film thickness , and then by repeated curing , reducing the film adhesion , easy to cause the film to fall off. Thus, in the production of aluminum processing color as far as possible to avoid multiple rework.

10 reasonable control of film thickness , color aluminum processing is to spray more than twice , and if we also operate as a single spray that will lead to some face paint is thicker, and some face paint thinner , causing serious uneven thickness . So when spraying will be carried out in reasonable control , the first spray Xu , just focus on front surface coating, while the other side can not coated or less painted . Second spray called , flash -like focus as much as possible the need for surface spray , spray the other side do not spray or less , but also according to the first case and an optional spray paint color. Reasonable control of the second coating thickness , but must ensure that the second spraying of a coating on the front cover dredging effects .

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