Effect of the intercritical annealing in the formability and microstructure of a medium Mn steel sheet

The article presents the results of research on the selection of a transmission shaft of an optimal design for a small-sized, simple-constructed crushing device and theoretical determination of its parameters. According to the analysis of rectangular, trapezoidal, oval, tubular and conical transmission rods, trapezoidal rods have an optimal construction. Such rods ensure the convenient transmission of the stalks to be crushed, as well as compression of the material from both sides, accumulation and transmission. For this reason, we adopt a trapezoidal transmission line to the blue stem feed shredder. Based on the results of the theoretical research of transmission rods, it was determined that the stalks transmitted from the rod to the crusher depend on the shape of the rod and some parameters. According to theoretical studies, in order to transfer the crushed feed to the device and its supply channels with a comfortable and low resistance, the length of its transfer chute should be 65 cm, the width of the front part of the chute should be 40 cm, the width of the part connected to the supply chute should be 20 cm, and the slope of the chute should be 27°.

Transmission shaft and its parameters for feed choppers in agriculture

Borotov,

Bon,

Sattarov

et al. 2024

Results of acceptance tests of the disk plow for tillage in agriculture

Ishmuradov,

Abdumajidov

2024

Soil is the main natural resource for agriculture. All vital crops necessary for humanity and livestock are cultivated in it. As a result, a lot of research is being done on the creation of new technical tools and technologies for agriculture, including soil cultivation. The following years, disk plows, the working tools are in the shape of a spherical disk, have been widely used for plowing all over the world. Due to the fact that in addition to the forward movement of the working parts, the disc plows have less traction resistance than rotary plows and work without getting stuck in weeds and plant residues. In addition, disk plows are simpler in design than rotary plows, require less care and maintenance, as the cutting blades wear less and are constantly self-sharpening (due to rotation), and due to their length (compared to plow plows), disks work several times longer than plows with plowshares. The developed disc plow provides better soil compaction than a tipping plow, i.e. the number of fractions less than 50 mm in the area of its passage was 3.1-4.3 percent more, and the number of fractions more than 100 mm was 2.0-3 decreased by 6 percent.

Analysis of the state of cultivation and harvesting of mung bean and agro-biological requirements for threshing and separating its grain

Kurbanov,

Shomirzaev,

Tursunov

et al. 2024

Mung bean is one of the most important leguminous crops, and due to the increased demand in the market and the low demand for water in its cultivation, the area of Moss cultivation is expanding in Uzbekistan. Today, the area where mung bean is grown is more than 300 thousand hectares. With the increase in the area where mung bean is grown, the demand for the equipment used in harvesting it is also increasing. This creates the need to develop and introduce new technical means for mung bean harvesting. If we take into account that high-quality grain is obtained when mung is first harvested, dried, and then threshed, farmers and farms in our republic can thresh the mung crop without excessive mechanical impact on the mass to be threshed without damaging it. It is recommended to use a device that receives. In this case, the completeness of crushing and separating the grain should be at least 99%, the purity of the grain should be at least 96%, and the damage and destruction of the grain should not be more than 2%. For this purpose, it is desirable that the device has a combination of crushing and separation devices.