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Pay attention to these details, "smart" to create high quality insulating glass!
Since the use of insulating glass, its production has experienced double glass, simple double glass, manual single-channel sealing, double-channel sealing and composite strip-type insulating glass which has appeared in recent years. How can we produce high quality insulating glass?
First, the gusset joint
Our commonly used slotted aluminum hollow glass requires a double seal, which can cause the insulating glass seal to fail regardless of the seal. The inner channel is sealed with butyl rubber. The current domestic and foreign mechanical processes cannot guarantee the effective sealing of the gusset joint. At the gusset joint, the current remedy is to manually fill the outside of the gusset of the aluminum strip by a butyl rubber coater.
First of all, we have a premise that no matter which one seals the problem will lead to the failure of the insulating glass seal; then we will evaluate the process of butyl rubber by manually filling the outside of the gusset of the aluminum strip: in the advanced production process Backward manual links.
Moreover, if you go to the workshop to observe, you will find that almost every butyl bond filled in the gusset joint is not enough - that is, most of the gusset joints are still single-pass seals, which will directly lead to the insulating glass. The seal failed. Regarding the quality management department of the workshop, there must be some attention, but why is it that most of them are filled with dissatisfaction? I think there are two factors: First, the workers are basically basic wages plus piece of wages. It can save more time; the second is that this kind of process operation is more cumbersome and can't be done without doing or doing more.
The bent aluminum bars are continuously bent at the four corners, and the sealing at the gusset joints is substantially the same as the straight line. The weaker part is reflected in the in-line connection. I have observed in several glass deep processing factories in Beijing and Shanghai that the in-line connections are basically filled. Why? Because it is easy to operate and hardly wastes time. Therefore, it is inferred that the bent aluminum strip will be promoted soon. However, the price of bent aluminum strips is too high, which many manufacturers cannot accept. Therefore, it is inferred that new products will emerge with the development of competition in the industry, thus solving the problem.
The above reminds us: pay attention to the seal at the gusset joint, and fill it properly.
Bending aluminum strip
Second, the adsorption time of molecular sieve
Even if all of the insulating glass materials are used well, it is possible that your product will not pass the test. Each material has its own characteristics, such as molecular sieves.
The saturated adsorption time of the sieve was 24 hours. Even with the best manufacturing process, we have a basic exposure time requirement for molecular sieves: from the time the bag is opened until the second sealant of the insulating glass you fill is filled, the time cannot exceed 4 hours. If you have higher requirements for insulating glass, the exposure time can be shortened to 1.5 hours. The shorter the exposure time, the better, but the production process of less than 1.5 hours is difficult to operate in mass production.
Third, the curing time of polysulfide
The general operation is between 3-6 hours. As we all know, the curing time can be adjusted by the ratio of the A and B components. This involves two issues:
First, the curing time can not be adjusted arbitrarily. If the curing time is too long, the workshop may not have enough space. If it is too short, the curing speed is too fast, there is not enough time to apply, and more serious is the polysulfide after curing. The performance of the glue is reduced, and the specific time should be within the range given by the manufacturer.
The second is to determine the quality of the polysulfide - construction performance. For example, Zhongyuan polysulfide rubber, his A and B components are used in a ratio of 100:7~100:14, and many manufacturers give a ratio of 10:1. As everyone knows, this is only a theoretical value, in practice. It is impossible to achieve in operation, which has become an excuse for some manufacturers to be irresponsible for quality.
Fourth, the drying speed of the insulating glass and the water mist of the new finished product
Last month, in an insulating glass factory, I saw that the hollow glass that had just been produced was placed under the scorching sun, and soon the water mist appeared. Everyone was surprised and suspected the quality and production process of the insulating glass material.
This phenomenon can be explained by the drying speed of the insulating glass. As we all know, molecular sieve adsorption of water vapor is a process. The better the molecular sieve, the slower the adsorption rate. The molecular sieve only completes partial adsorption, and the static air in the hollow glass also contains more water vapor, so water mist occurs. Waiting for the molecular sieve to complete the task, the water mist naturally disappears.
Several factors affecting the drying speed of the insulating glass include: the air humidity in the production workshop, the filling ratio of the molecular sieve, the adsorption speed of the molecular sieve, the size and density of the aluminum pores, and the sealing quality.
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