RU93150U1 - INSTALLATION FOR FORMING ON THE SURFACE DETAILS OF NANO-COATINGS AND RESEARCH OF STRENGTH OF DETAILS AT LINEAR STRESS STATE - Google Patents

Abstract

 1. Installation for forming on the surface of the part of nanocoating and researching the strength of the part under linear stress state comprises a device for applying nanocoating to the surface of the part of the part in linear stress state, the device for applying the coating is made in the form of a vacuum chamber with a cooling supply unit liquid, the vacuum chamber consists of a hollow cooled case with a pipe for pumping air and a pipe for supplying argon and a composite cover, floor the spine of which is connected to the casing, a panel for thermocouples and pressure sensors is fixed on the casing, and inside there is a metal flask with a bath filled with liquid metal melt, the upper end of the metal flask is fixed in the upper part of the lid, and heating elements are located around it, a metal pipe is installed above the bath fixed in the upper part of the cover with the possibility of vertical movement, a hollow workpiece is attached to the lower end of the pipe with the formation of a closed cavity, the upper The pipe end protruding from the chamber is connected to a lever for vertical movement and contains a pipe for draining the liquid, and the unit for supplying coolant consists of a tube placed in the cavity of the pipe with the part, with a pipe for supplying liquid, a device for studying the strength of a part consists of a lever connected to a rod placed in the cavity of the pipe with the part, an indicator is mounted on one shoulder of the lever, the other end is connected to the plate with the load. ! 2. Installation according to claim 1, characterized in that the heating elements contain

Description

The utility model relates to devices for the formation of surface nanostructures on metal parts with the subsequent study of their mechanical properties and can be used in mechanical engineering to create protective, hardening and wear-resistant coatings.

A device for diffusion metallization in an environment of low-melting liquid metal solutions (patent RU No. 2293791). The device comprises a chamber, consisting of upper and lower parts, an ampoule with a liquid metal solution located in the lower chamber, heating devices, heat shields, a vacuum system and an inert gas filling system. Both parts of the chamber along the internal cavities of the walls are cooled by liquid. The technological process of coating in this device is as follows: after sealing the chamber, reaching a predetermined vacuum in it, the chamber is filled with inert gas. The chamber is heated using heaters. After reaching the set temperature, the part is immersed in a metal solution, as a result of which a coating is applied to the product.

The disadvantage of this installation is that it does not provide the possibility of combining the processes of coating a part and testing them for strength .;

A known bench for testing a rotating part for breaking (patent RU No. 2029276). The stand contains a vacuum booster chamber, a rotation drive of the test sample, sensors, a recording device, an induction heater for heating the entire sample, and a heater for local heating of part of the sample. Tests are carried out under conditions close to operating conditions.

A device for testing samples of materials in tension (patent RU No. 2251676) is known. The device consists of an element of increased rigidity of the loading system of the deformation localization zone, inside of which grips with a thread are located for attaching samples and a system for collecting and processing information.

These devices are intended only for testing samples, and processing in order to harden the surface of the samples must be carried out in other devices. In addition, it is not possible to test hollow specimens in these devices.

The objective of the utility model is to reduce the time between the application of the hardening coating and the study of the strength of the coated sample by carrying out these operations in one installation, and to increase the accuracy of the tests by conducting them under conditions close to operational.

The problem is solved in that the installation for forming a nanocoating on the surface of the part and studying the strength of the part under linear stress state contains a device for applying nanocoatings on the surface of the part and a device for studying the strength of the part in linear stress state, the device for coating is made in the form of a vacuum chamber with the coolant supply unit, the vacuum chamber consists of a hollow cooled body with a pipe for pumping air and a pipe for supplying argon and a composite lid, the cavity of which is connected in the casing, a panel for thermocouples and pressure sensors is fixed on the casing, and inside there is a metal flask with a bathtub filled with liquid metal melt, the upper end of the metal flask is fixed in the upper part of the lid, and heating elements are located around it a metal pipe is installed in the bathroom, fixed in the upper part of the lid with the possibility of vertical movement, a hollow workpiece is attached to the lower end of the pipe to form of the cavity, the upper end of the pipe protruding from the chamber is connected to a lever for vertical movement and contains a pipe for draining the liquid, and the node for supplying coolant consists of a tube placed in the cavity of the pipe with the part, with a pipe for supplying liquid, a device for research the strength of the part consists of a lever connected to a rod placed in the cavity of the pipe with the part, an indicator is installed on one shoulder of the lever, the other end is connected to a plate with a load, the heating elements contain devices for Yes, electricity and tungsten wires, the pipe is connected to the workpiece by a welded joint.

Figure 1 shows the installation for forming on the surface of the part nanocoating.

Figure 2 shows the installation for the study of the strength of the part under linear stress state.

The installation consists of a hollow cooled housing 1 of the vacuum chamber, a composite cover 2, the cavity of the cover 2 is connected to the housing 1 through the opening 3. The pipe 4 serves to remove air from the housing 1 and is connected to a diffusion pump (not shown). The pipe 5 serves to supply argon. A panel 6 is mounted on the wall of the housing 1 for mounting pressure sensors. Inside the housing 1 is installed a metal flask 7 with a bath 8 filled with molten liquid metal. Around the bulb 7 there are heating elements 9. To prevent overheating of the body metal from overheating, heat shields are placed inside the chamber 10. Above the bathtub 8 there is a metal pipe 11 mounted through the clamping unit 12 in the upper part of the lid 2 with the possibility of vertical movement. The lower end of the pipe 11 is connected (for example, welded) with the workpiece 13 to form a closed cavity. In the upper part of the pipe contains a pipe 14 for outputting coolant and is connected to a lever 15 mounted on the cover 2, with which it is possible to vertically move the pipe 11. The node for supplying coolant to the pipe 11 consists of a metal pipe 16, placed in the cavity of the pipe 11, with a pipe 17 for supplying coolant. A device for studying the strength of a part under linear stress state consists of a lever 18 connected to a rod 19 placed in the cavity of the tube 11 so that it abuts against the bottom of the part 13. An indicator 20 is mounted on one arm of the lever to control the deformation of the part, and the other is connected to plate 21 with a load of 22.

Installation works as follows:

After sealing the chamber include a diffusion pump (not shown) attached to the pipe 4, to create a vacuum in the installation. Upon reaching a predetermined vacuum, the chamber is filled with argon through the nozzle 5. Next, the bath 8 with the liquid metal melt placed in the metal flask 7 is heated to a predetermined temperature using the heaters 9. Then the nozzle 17 is opened, and through it the pipe 16 placed in the cavity pipe 11, continuous cooling of the part 13 welded to the pipe 11 is carried out. Next, using the lever 15, the part is immersed in a bath 8 with liquid metal melt. As a result, due to the large temperature gradient at the part-melt interface, the precipitation of metal dissolved in the melt onto the surface of the part begins. After a certain time, using the lever 15, the sample is taken out of the melt and subjected to a linear stress test. For this, a metal rod 19 is inserted into the pipe 11, abutting against the bottom of the part. Using the load 22 on the plate 21 regulate the load on the part. The indicator 20 fixes the degree of stretching of the part through the movement of the lever 18.

As a result of the application of the proposed complex, the test time is significantly reduced due to the possibility of applying a nanocoating on the surface of the part and immediately testing this part without removing it from the installation.

Claims (3)

1. Installation for forming on the surface of the part of nanocoating and researching the strength of the part under linear stress state comprises a device for applying nanocoating to the surface of the part of the part in linear stress state, the device for applying the coating is made in the form of a vacuum chamber with a cooling supply unit liquid, the vacuum chamber consists of a hollow cooled case with a pipe for pumping air and a pipe for supplying argon and a composite cover, floor the spine of which is connected to the casing, a panel for thermocouples and pressure sensors is fixed on the casing, and inside there is a metal flask with a bath filled with liquid metal melt, the upper end of the metal flask is fixed in the upper part of the lid, and heating elements are located around it, a metal pipe is installed above the bath fixed in the upper part of the cover with the possibility of vertical movement, a hollow workpiece is attached to the lower end of the pipe with the formation of a closed cavity, the upper The pipe end protruding from the chamber is connected to a lever for vertical movement and contains a pipe for draining the liquid, and the unit for supplying coolant consists of a tube placed in the cavity of the pipe with the part, with a pipe for supplying liquid, a device for studying the strength of a part consists of a lever connected to a rod placed in the cavity of the pipe with the part, an indicator is mounted on one shoulder of the lever, the other end is connected to the plate with the load. 2. Installation according to claim 1, characterized in that the heating elements include devices for inputting electricity and tungsten wires. 3. Installation according to claim 1, characterized in that the pipe is connected to the workpiece by a welded joint.