Monthly Archives: May 2011

Channel bars are divided into the following categories: Steel channels Hot This type of channel bars are manufactured according to gost 535-88 sloping internal faces of the shelves and with parallel flanges: 10, 10P, etc. Slope of internal faces are not exceed 10%. Range Steel channels r / k corresponds to gost 8240-89. Number of channel bar g / k corresponds to its size (the distance between the outer edges), expressed in centimeters. For example: Channel bar? 10 – the distance between faces of the channel bar is 10 cm All other dimensions: width shelves, wall thickness, etc.

according to gost (listed in Table. directory). Channel with the letter A at the end of the room (14A) – a channel with sloping inner faces of the shelves, but it is wider and the shelf, respectively, the weight per meter more than the usual channel bar (without letters). There are special types of hot-channel bar: channel dedicated to the automotive industry – gost 19425-74 (18C, 20C), a special channel for railcar – gost 5267.1-90 (8V, 14V, 18V). Steel channels bent (equal and unequal) Steel curved channel bars are manufactured according to gost 11474-76 on profile-bending machine from cold and hot rolled steel common quality, quality carbon structural and low alloy. Range corresponds to the channel bar bent: Equal – gost 8278-89; unequal – gost 8281-80. Number of channel bars correspond to Size, expressed in millimeters. For example: 40h32h2 and 5, where 40 – is the distance between the flanges (mm), 32 – flange width (mm) 2.5 – wall thickness (mm). Visual bent channel differs from the presence of hot-rolled rounded outer corner.

Sheet-metal stamping is one of the most common methods of metal forming. Depending on the stamp, it can deform the material is given a way to cut it, or perform other actions. Because of their productivity and quality of sheet-metal stamping has become one of the main methods of metal processing in modern industry. Sheet-metal stamping has a few main types of operations: separation, formal and combined. As is clear from their names, dividing imply that the initial billet is cut into separate pieces. These include deforestation, punching, cutting, punching, trimming and other actions. Sheet-metal stamping, in which changes shape blanks, called formative. This operations such as snap, edit, squeezing, stretching.

Finally, Combination sheet-metal stamping involves simultaneous deformation and workpiece, and cutting. Any sheet-metal stamping is carried out by the following principle: metal sheet is clamped between a fixed matrix and a movable plunger which give it the desired shape. In the case of cutting, punch not only deforms and breaks through the workpiece. This requires the use of special stamps. Sheet-metal stamping, during which the Cutting the material passes through three basic stages: elastic stage, plastic stage, and cleavage. The first phase includes the elastic deformation of the metal and a small indentation in the matrix. Punch has yet a little pressure the workpiece. At the next stage of sheet-metal stamping requires a deep indentation in the metal matrix.

It should be noted that the punch (assuming he rectangular shape), exerts pressure over part of its labor parts, but only on the edges – it is there and will be cut. Because of such a distribution of operating forces of the workpiece to be cut, bent. Sheet-metal stamping goes to the third stage, when the voltage on edge reaches the limit. After that, the metal having a crack, first in contact with the edges of the matrix, and then by the punch. As the pressure increases in these places is chipped – Sheet punching is completed.

Industrial steel ropes are quite complex and important type of wire products. They have a large number of styles and designs and different shapes of cross section, both the rope and its elements. Except addition, there are differences, and on physical and mechanical characteristics. Ropes differ primarily in the direction of lay of the rope: the left and right (denoted by the letter A in the labeling). Ropes also differ in material Core: – the organic core of natural or synthetic materials (indicated by the OS) – with a metal core – ms. Core in the wire rope is the internal support and cushion for the strands and the very rope as a whole. Its primary function – to resist radial pressure strands during loading of the rope, while avoiding its transverse strain.

As the organic cores are used cores from the natural materials – hemp, synthetic and artificial materials – polypropylene. In the production of steel ropes are commonly used organic cores are impregnated with antiseptic and anti-corrosion compositions. Mass fraction of the impregnated composition ranges within 25-50% of the permanently dry mass of the core. In the production of steel wire rope wire rope lubricant the choice of form and methods of its application is of great importance, because of this largely depends on the reliability of the rope and the opportunity to fully use its technical resources. Grease is designed not only to protect the metal from corrosion of steel wire rope, but to ensure long-term preservation of the organic core of the rope, reduce friction and wear of both internal and external wires of the rope while working on the blocks.

The ropes are wound on wooden drums, gost 11127-78 or metal drums, as well as the returnable drums with them in the prescribed manner, or in the bay. The diameter of the neck drum shall be not less than 15 nominal diameter of the rope. Board should act on the drum outer layer of coiled steel wire rope not less than two diameters of the rope with a diameter of 25 mm and not less than 50 mm diameter rope for more than 25 mm. Allowed winding on the drum a few segments of the rope the same size.

Video of the machine represent bending rolls, which are versatile machine for bending sheet in a cold state. Rollers are designed for bending, rolling pieces of sheet metal ferrous, nonferrous metals and alloys, with pre-scrap yield no more than 2500 kg / cm. beliefs. It is used when the following works: – edge pieces – flexible cylindrical shells – flexible conical shells – Flexible arcuate elements – edit slabs. The mechanism is designed based on the experience of domestic and foreign companies, made a 3-Volkova, asymmetrical arrangement of the work rolls. Rollers (manual and mechanical) used in ventilation-blank production, installation of sanitary systems, and other industries for the manufacture of thin-walled shells and all sorts of covers.

Minimum diameter of the products produced on the machine equal to 160 mm. Specifications Rolling Machines MEM-3401 Name Options 1 Dimensions LxWxH: 3460h1000h1450 2 Characteristics of electrical equipment:-engine main drive, V / Hz / W-drive motor recovery, V / Hz / watt. 380 / 50 / 2200 380 / 50 / 750 3 Number of rolls, pieces. April 4 Bending speed, m / min. July 5 Speed podma auxiliary rolls, m / min. 0.4 6 Diameter of rolls: – upper, mm. – Lower, mm. – Subsidiary, mm.

120 110 110 7 The smallest bending radius of workpiece, mm 80 8 Maximum width blank, mm. 2500 9 Maximum sheet thickness, mm 2 10 Weight, kg. 1340 Construction iehanizma has several advantages: – possibility edge piece without using any additional equipment – an extra roll in coupled with the mechanism of skew rolls and allows bending of conical shells – use of profiles allows the main roll roll cylindrical shells good accuracy with a small radius – automatic tuning to the desired thickness of the workpiece – overload protection mechanism in case of contact with a double thickness of the material – the main mechanism for tilting the upper roller in the horizontal plane for the removal of a closed shell – electromechanical lifting, lowering and lateral misalignment of rolls – an effective overload protection mechanism – a reliable system of protection from injury – the ability to control movement with by elektropedali or remote – install mechanism does not require a special foundation with anchoring. To meet customer demands Plant offers the following services: a) Supplies Kit spare parts for machinery, and b) Perform pre-commissioning and training of personnel to work on the machine, and c) carries out repair and maintenance of equipment supplied. MEM-3401 is the base. Extending the model series based on the principle of multiple changes in the length of the working rolls with the major units and sets the base model. This will allow for release mechanisms quickly reset the production and meet demand most customers.