Tag: promyshlennoct and equipment

Step 1: Choose a needle Step 2: Select the edge Step 3: Select Room needle Step 1: Choose a needle – a critical decision that greatly affects the quality of the stitch. The wrong choice could lead to a hollow needle, and even the machine itself. Each needle has three defining parameters, and that will help you find the right needle. Step 2:: Select a tip is usually the biggest problem lies in choosing the correct form of the tip. For example, to run the lines on the knitting the canvas is better to choose the point of ses (slightly rounded tip), but some industries are used for these purposes the point of R with a standard sharpening, which can lead to tissue damage. Step 3: Select the number the needle. Number of needle – diameter working part of the needle (the rod). The choice of needle size depends primarily on the material, its type and status, as well as the number of layers of fabric that you want to ask. Often the selection of numbers needle carried by experience. Note: in the details and the full description you can find the article on the website source.

Step 1: Choose a needle Step 2: Select the edge Step 3: Select Room needle Step 1: Choose a needle – a critical decision that greatly affects the quality of the stitch. The wrong choice could lead to a hollow needle, and even the machine itself. Each needle has three defining parameters, and that will help you find the right needle. Step 2:: Select a tip is usually the biggest problem lies in choosing the correct form of the tip. For example, to run the lines on the knitting the canvas is better to choose the point of ses (slightly rounded tip), but some industries are used for these purposes the point of R with a standard sharpening, which can lead to tissue damage. Step 3: Select the number the needle. Number of needle – diameter working part of the needle (the rod). The choice of needle size depends primarily on the material, its type and status, as well as the number of layers of fabric that you want to ask. Often the selection of numbers needle carried by experience. Note: in the details and the full description you can find the article on the website source.

The first, who suggested the use of hdtv for the heating of metals, was Vologdin vp in 1923. and only in 1935 began to apply a high frequency heating for hardening metals. Today hardening is used in virtually all sectors . hdtv surface hardening are used to the fact that to increase the hardness of the hardened layer and simultaneously increase the viscosity in the center of the details. This is possible because at high frequency hardening the top layer is heated up to do Zalki temperature and immediately cooled, and the core components retain their properties. Due to the fact that the core is a viscous, the item becomes less fragile. hdtv allows you to quench hardening of the concrete details which is necessary to give the desired properties, not the whole piece as a whole. hdtv hardening. Advantages: 1) high frequency hardening economical than conventional hardening, because when heated by high frequency quenching only a necessary element of detail, plus reduces the time 2) the high frequency quenching reduces marriage to warping and cracking, and 3) high frequency hardening is not conducive to burning carbon and scaling, and 4) depending on the need, you can change the depth of the hardened layer; 5) application of high frequency hardening, the mechanical properties of steel is higher than a conventional quenching. 6) When using high frequency hardening is practically no strain, and 7) High automation and mechanization of the process. hdtv hardening. Disadvantages: 1) enough difficult to handle the intricate details of 2) is not beneficial to use with no high-volume production of high frequency surface hardening. Its species: – hd hardening stationary (detail and the heater did not change my position. Used to hardening of flat parts (surfaces) are not large) – hd hardening continuous sequence (in this case, the item moves under the heater, any part remains in place, and the heater going in the direction of the details. Is also used for flat parts (surfaces), as well as cylindrical parts (surface). HD-hardening tangential continuous sequences (item scrolls once. It is used only for cylindrical parts are not very large.) Another disadvantage of high frequency quenching, it is something that is very important, which form a part, and in some cases, high frequency quenching is not suitable for machining because of their shape. In this case, use grouting with heat treatment to increase strength and durability, but the cost of this method will be in 2 – 3 times more expensive than the cost of hardening of hdtv. hdtv is used for hardening of medium steels (0,4-0,45% C) or for strengthening the internal layer of alloy components

The first, who suggested the use of hdtv for the heating of metals, was Vologdin vp in 1923. and only in 1935 began to apply a high frequency heating for hardening metals. Today hardening is used in virtually all sectors . hdtv surface hardening are used to the fact that to increase the hardness of the hardened layer and simultaneously increase the viscosity in the center of the details. This is possible because at high frequency hardening the top layer is heated up to do Zalki temperature and immediately cooled, and the core components retain their properties. Due to the fact that the core is a viscous, the item becomes less fragile. hdtv allows you to quench hardening of the concrete details which is necessary to give the desired properties, not the whole piece as a whole. hdtv hardening. Advantages: 1) high frequency hardening economical than conventional hardening, because when heated by high frequency quenching only a necessary element of detail, plus reduces the time 2) the high frequency quenching reduces marriage to warping and cracking, and 3) high frequency hardening is not conducive to burning carbon and scaling, and 4) depending on the need, you can change the depth of the hardened layer; 5) application of high frequency hardening, the mechanical properties of steel is higher than a conventional quenching. 6) When using high frequency hardening is practically no strain, and 7) High automation and mechanization of the process. hdtv hardening. Disadvantages: 1) enough difficult to handle the intricate details of 2) is not beneficial to use with no high-volume production of high frequency surface hardening. Its species: – hd hardening stationary (detail and the heater did not change my position. Used to hardening of flat parts (surfaces) are not large) – hd hardening continuous sequence (in this case, the item moves under the heater, any part remains in place, and the heater going in the direction of the details. Is also used for flat parts (surfaces), as well as cylindrical parts (surface). HD-hardening tangential continuous sequences (item scrolls once. It is used only for cylindrical parts are not very large.) Another disadvantage of high frequency quenching, it is something that is very important, which form a part, and in some cases, high frequency quenching is not suitable for machining because of their shape. In this case, use grouting with heat treatment to increase strength and durability, but the cost of this method will be in 2 – 3 times more expensive than the cost of hardening of hdtv. hdtv is used for hardening of medium steels (0,4-0,45% C) or for strengthening the internal layer of alloy components

Ball valve – "relative" pipeline valve. Its the locking element – a spherical shape, hence the definition of "ball". This is a modern, progressive type valves having the most extensive application in many areas of industry, urban communications, pipelines that transport natural gas, oil, among other areas. It would seem, ball valves began to find its broad application with respect to recently, however, design them not so new – it more than a hundred years. But before manufacturing techniques do not provide a dense overlap of passage passed through the pipeline environment. This is a case where a simple and very productive idea was lacking for the practical implementation of decent materials. When were in the industry and came to Valve Teflon, synthetic rubber, which provided a really tight fit of the saddle shell to the surface of a metal ball stoppers – it was then that ball valves have finally widespread. These materials ensure a tight seal and substantially reduced the effort to crane controls. True, the temperature is transmitted by the medium should not exceed 200 degrees. The reason for this is that the seat shell run rings made of plastic, which allows easy, leak and smooth rotation of the ball tube. Gate that is movable component of ball valves, is a spherical tube, along which the through hole intended for the passage of the medium. Most-diameter round hole tube to the inner diameter of the pipe. This is called a full bore ball valve. When passing through the valve open fully, hydraulic losses of the working environment is very small, which is advantageous in times, features ball valves from other types of valves and makes them the main shut-off device for linear sections of main gas pipelines. However, if the control valve is particularly important to consider factors such as Reduction in size, as well as torque is applied another type of ball valves – narrowed. How is the control of ball valves? For small diameters – by hand. At large – are used electric or hydraulic actuators.