Rice production forecasting is a forecast of yield before harvest. The purpose is to obtain yield information as early as possible before crops are harvested, and provide basis for formulating plans for harvesting, storage, transportation, and processing. In recent years, with the development of seed industry, rice seed varieties have been continuously improved, and the test work has become more and more important. More and more frequent, in order to do a good job in rice production, obtain more accurate test data, the number of grain It has gained important application in the rice production test. The instrument not only frees the laboratories to release their hands, but also greatly improves the efficiency and accuracy of the test production, and promotes the development of the rice industry toward higher output and higher quality. .
In the rice production test, the determination of 1000-grain weight is one of the key items in the rice production test. The traditional 1000-grain weight measurement mainly relies on manually counting out 1,000 rice, and then carries out a weighing measurement to obtain a thousand-grain weight result, but we Knowing that the individual rice is small and the artificial number is 1,000 rice, not only the eyes are easy to flower, but also the hands are prone to errors, and errors are easily made. Therefore, it is often difficult to ensure that the data of the 1000-grain weight measurement is accurate and true. It is also difficult to grasp. After the automatic use of the counting instrument, the number of operators can fully grasp the initiative. When the field measurement is performed, it can even count 5,000 or more rice in a relatively short period of time. Measure weight to get accurate "Thousand grain weight" data.
The development of accurate rice production is of great significance to the promotion of rice cultivation. Therefore, it is very important to accurately conduct the three factors of production survey. Through the application of the counting instrument in the rice production test, the rice measurement work has changed its thinking, improved the working methods, and can achieve a new situation of modern rice investigation. With the help and support of the counting instrument, the rice production test work is not only more efficient, but also has better accuracy and reliability, and the probability of occurrence of errors is even smaller. This is the promotion of new rice varieties and food security guarantees. The work has made great contributions and has greatly promoted the development of the rice industry.
Stamping (also known as pressing) is the process of placing flat sheet metal in either blank or coil form into a stamping press where a tool and die surface forms the metal into a net shape. Stamping includes a variety of sheet-metal forming manufacturing processes, such as punching using a machine press or stamping press, blanking, embossing, bending, flanging, and coining.This could be a single stage operation where every stroke of the press produces the desired form on the sheet metal part, or could occur through a series of stages. The process is usually carried out on sheet metal, but can also be used on other materials, such as polystyrene. Progressive dies are commonly feed from a coil of steel, coil reel for unwinding of coil to a straightener to level the coil and then into a feeder which advances the material into the press and die at a predetermined feed length.
Stamping is usually done on cold metal sheet. See Forging for hot metal forming operations.
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