On the particle hardness of suckling pig feed

Recently, a salesman complained that the suckling pig feed of the company was relatively hard. At first, he didn't believe it. Later, he took samples from November and December and chewed them in his mouth. At the same time, he determined the time of dissolving water, and finally found that this was the case. The suckling pig feed particles in December were harder than those of the previous month. You know, the formula for the past two months is the same, but the ring mold was replaced by a new one at the end of October. Recently, I have been thinking about this problem. Please help me find out why. -- Oh, of course the new ring mold is harder! The factors that affect the hardness of particles, when only changing the mold and season, the main factors that can be considered are "one may be the reason of ring mold". Second, it may be that the corn is dry.-- the new ring die is generally harder and can be pre-punched-- passing by to learn, but if the corn is dried, it seems to be difficult to granulate and difficult to shape. How can it be hard?-- I also raised this question in the forum. There are no specific measures to control hardness, and the relevant research data are very few. I read it wrong. The relevant parameters should be paid attention to when quenching and tempering. -- I also think it's the reason for touching around. Is it not done well? Or didn't rush? Is the granulation temperature high? Has the whey powder changed? Is the lactose content high?-the original post was posted by wangxiang213 at 10:24 on 2008-1-8, but the dried corn seems to be difficult to granulate and not easy to shape, so how can it be hard? Wet new corn in autumn Absorb less moisture during quenching and tempering until the corn is dry in winter (this post was finally edited by the shepherd boy at 20:37 on 2008-1-8)-- now the moisture content of the corn is 1 or 2 points lower than that at the beginning of the harvest. Recently, we have to take the ring die and rinse it. -- passing by to learn Add a little more knowledge, thank you-last night, we used the washed ring die to produce suckling pig feed. This morning, we compared the speed of water melting. Compared with the one before flushing, the speed of water change is not obvious, and the speed of water change in November is the fastest. It seems that the moisture content of corn is a very important factor. In addition, we use the punched ring die to produce poultry feed, but the appearance of poultry feed is much smoother than before.