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The leaves are the material basis for photosynthesis of plants, the medium for transpiration, and the main organs for the synthesis of organic matter. Therefore, in the process of plant growth and development, the leaf has the most obvious influence on it. From a scientific point of view, if the growth of cotton is good, it is not that the more leaves, the better, but it should be controlled within a reasonable range. And this important measure is the leaf area index. Using the leaf area meter to quickly determine the leaf area of ​​a plant, and calculating the leaf area index is one of the most reliable and convenient methods for obtaining the plant leaf area index.
Taking cotton cultivation as an example, the leaf area is one of the indicators to measure the growth and development of cotton and whether the population structure is reasonable. Accurately determining the cotton leaf area is extremely important for improving the yield and quality of cotton cultivation. However, because the cotton leaves are palmately divided, the number of lobes and the depth of the rips vary depending on the species and the habitat of the leaves, so it is relatively cumbersome to accurately determine the cotton leaf area. In order to improve efficiency and accuracy, we have developed a leaf area meter that specializes in determining the leaf area of ​​plants and applies it to cotton leaf area index monitoring, which will certainly provide convenience and technical support for the effective development of these works.
According to the leaf area index, it can reflect whether the cotton canopy structure is reasonable, whether the vegetative growth and reproductive growth are coordinated and their fertility processes, etc. However, the standard leaf area index required by cotton is different in different growth stages of cotton. Therefore, the measurement of cotton leaf area index is not a single measurement, but needs to be measured, analyzed and studied according to actual needs. That is, cotton leaf area index monitoring must be conducted. At this time, a simple, fast, accurate, and easy-to-use method is needed. The leaf area determination method is very important, and the application of leaf area meter in cotton leaf area index monitoring just meets the demand and can provide an important reference for the scientific cultivation of cotton and further guide cotton farmers to do field management work for cotton. The harvest will increase production and lay a good foundation.
Stamping is a kind of process that obtaining the required shape and size of the parts by outside force on the metal sheet, strip, pipe shape material use mould and press machine, in order to produce plastic deformation or separation. Stamping and forging belong to plastic processing (or pressure processing), called the forging press. The mainly stamping billets are hot rolling and cold rolling steel plate and steel belt.
Stamping processing is a production technology that use of conventional or special equipment of the power, make the deformation sheet metal deformation in the mould. Thereby produce a certain shape, size and performance parts. Sheet metal, stamping mould and equipment are the three elements of stamping.
Stamping characteristics:
Compared with the castings, forgings, stamping parts have the thin, uniform, light and strong characteristic. Stamping can make other methods are difficult to manufacture, such as rib stiffener, flanging, ups and downs, or flanging products, in order to improve its stiffness. Because use precision mould, the precision of part can reach micron grade, and repeat precision is high, the specification is consistent, can punch a hole nest, convex sets, etc. Cold stamping generally no longer by machining, or only need a small amount of machining. Hot stamping precision and surface state is lower than the cold stamping parts, but it's still better than the castings, forgings, less cutting processing capacity.
The Advantage of stamping:
(1) The stamping process is high production efficiency, and easy
to operate, easy to realize mechanization and automation.
(2) The mould ensure the
stamping precision of the size and shape when stamping, and generally does not
destroy the surface of the quality of stamping parts , and the life of the
mould are long, so the stamping quality is stable, has the characteristics of
"the same".
(3) The stamping can produce the part that
size range is larger, more complex shape parts, such as small to stopwatch of
watch, big to Auto longeron, cover parts, etc., and stamping material hardening
effect of cold deformation, the strength and stiffness of stamping is high.
(4) Stamping generally has no chip broken
material, material consumption is less, and do not need other heating equipment,
it is a kind of machining method that material saving, energy saving, stamping
parts cost is low.
The process classification of stamping:
Stamping is mainly classification by process, can be divided into separation process and forming process. Separation process is also called the blanking, and its purpose is to make the sheet metal of stamping parts separated along the contour line, and at the same time guarantee the quality of the separation section requirements. Forming process is designed to make sheet metal occurred plastic deformation under the condition of not to break the billet, made into the required shape and size of parts. In the actual production, it is often a variety processes integrated applied to one part. Cutting, bending, shear, deep drawing, bulging, spinning, correction are the main stamping processes.
The conventional material of stamping part: Aluminum sheet like 6061,6063, stee alloy sheet like Q235, ST37-2, Stainless steel sheet like SS304,SS316;
The precision of the stamping part: ±0.1mm;
The thickness of the metal sheet we can do: 0.5mm~12mm;
The max size of the stamping part in my factory: 1mX1m;
Surface preparation methods: Powder coating, Painting, Plating, Electrophoresis, Polishing.
The Metal stamping and QC control equipment
Metal Stamping Parts, Precision Metal Stamped Parts, Steel Stamping Parts, Stainless Steel Stamping Parts, Aluminum Stamping Part
NINGBO BEILUN LEMA MACHINERY TECHNOLOGY CO.,LTD , http://www.china-lema.com