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    Raising The Quasi Determined Water Level Is The Key To Successful Dyeing Once And For All.

    2012/11/6 10:32:00 27

    Quasi Determined Water LevelDyeing ProcessDisposable Dyeing

     

    increase Quasi determined water level The technical research is the key point for us to focus on, and it is also the key point for the successful study of one-off dyeing in the future. As I have mentioned before, once dyeing is successful, we must study the dyeing system. If the water level can not be determined, then the knowledge of some of the knowledge obtained in the dyeing system can be used to guide the success of one-off dyeing.


    Why do we say so? In the whole dyeing system, the average density of the electrolyte can be monitored by SG value instrument, and the pH value is monitored by PH instrument. These two points have accurate data description. But the water level is only based on the water level gauge next to the dye tank to reflect whether the water level meets our requirements. The error is large, so we can not get the exact data completely. That is to say, we should pay attention to the influence of mechanical wear on dyeing, and always pay attention to vulnerable parts and do maintenance work. This point can be completely handed over to the mechanical manufacturer to solve it, but we have to do a good job in the registration of mechanical equipment malfunction in order to reflect the problem to the manufacturer. Manufacturers are only responsible for manufacturing, and users always touch some of the malfunctions of the equipment first. If both can be combined, I believe we can achieve a win-win goal.


    Because in our common sense, the error value of 100ml's measuring cylinder is + 1ml, and the measuring error of 1000ml's measuring cylinder is + 10ml. By analogy, the error of the ten thousand liter capacity instrument should be about 100 liters, which requires that the dye cylinder should be made into the shape of measuring cylinder, so that the error can be reduced to such a low level. But in fact, it is difficult to do so. The error is also converted by the cross-sectional area of the volumetric device. If the cross-sectional area ratio is 1:1, the error will be around ten percent, that is to say, if we want to enter ten thousand liters of water, sometimes it will be nine thousand liters and sometimes it will be eleven thousand. This means that the water level of our dye tank does not have an exact data to illustrate its accuracy and error range. Therefore, these experienced water level masters have a high success rate in determining the water level, but experience has their limits. So we need to scientifically study the water level, and we can use the data to show the problem of water level. Because the ratio of the cross section area to the height of the VAT is too large. So, in Dyeing I do not agree with the calibration method to determine the water level. The better available flow method or weighing method is more accurate, but weighing method is not practical for large dyeing tanks. The statutory level of water flow can be realized and worthy of further study. This is also the direction I want to focus on in the future.


    As for the dyeing system, besides the quantifiable parameters I mentioned before: SG value, pH value and electrical conductivity, the dyeing dynamics is also involved. For example, in the whole dyeing system, we should dye the 1000kg cloth at 1:10 water ratio. In theory, the total amount of water should be 10000 litres. If we enter the dye vat according to the 10000 liters of water, we should be accurate according to our sample. The error of the whole dyeing condition is controlled within 4%, and the success of primary dyeing is not large. But what will happen if we put more water up to 1000 litres or less than 1000 litres?


    If we call it accurate, we can reduce the error as much as possible by adding more water when measuring SG. However, in dyeing process, salt is rarely added to the dyeing system at all times. (if so, we can also control the water level by electrolytes. If the sample is dyed, when the water ratio is determined at 1:10, the blanking is accurately described. According to my personal observation, the Department responsible for the sample is based on the small sample formula provided by the workshops, and the weighing method is adopted. The one-time success rate is very high. Therefore, it is very important for us to strengthen the study of the quasi determined water level. It is very important for us to study the disposable dyeing OK. If the water level is not determined, the efforts ahead of us in management and technology will be wasted. At the same time, it is necessary to strengthen the simulation study of SG value and conductivity standard sampling. Want to think One time dyeing These two points deserve further study.

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