Inertial navigation metal part heat treatment dehydration device and method based on water cutting agent

Abstract

The invention relates to a part dehydration device, in particular to an inertial navigation metal part heat treatment dehydration device and method based on a water cutting agent, and aims to solve the problems that the water cutting agent and water are difficult to separate and a used container is not beneficial to discharge and replacement of the water cutting agent when a water cutting agent dehydration method is adopted in the prior art. The included angle theta between the bottom surface of the dewatering box body and the horizontal plane is more than or equal to 10 degrees and less than or equal to 20 degrees; a partition plate connected with the side wall and parallel to the horizontal plane is arranged in the dewatering box body, and the height of the partition plate is equal to that of the highest position of the bottom surface of the dewatering box body; a space defined by the lower surface of the partition plate, the upper surface of the bottom surface of the dewatering box body and the inner side wall of the dewatering box body forms a water storage space; the side wall of the water storage space is provided with a water drainage port with a water drainage valve and an observation pipe, and the observation pipe is used for observing the position of the interface of water and the water cutting agent in the water storage space.

Description

Technical Field

[0001] The invention relates to a parts dehydration device, in particular to a heat treatment dehydration device and method for inertial navigation metal parts based on a water cutting agent. Background Art

[0002] Inertial navigation metal parts are common components in inertial navigation systems, mainly used in the aerospace field. They usually require high dimensional stability and high reliability. Therefore, inertial navigation metal parts need to be properly heat treated during processing to remove the machining stress of the parts and maintain the structural and dimensional stability of the parts. In the field of inertial navigation, according to the use characteristics of metal parts, hot and cold cycle treatment is generally used to remove machining stress.

[0003] Hot and cold cycle treatment is to cool the parts from room temperature to low temperature (or raise them to high temperature), keep them warm for a certain period of time, and then raise the temperature to high temperature (or cool them to low temperature) and keep them warm for a period of time. This is one cycle, and then a second, third or even more cycles are performed. Hot and cold cycle treatment can be used for environmental testing of components and complete products, and can also be used for stress relief treatment of metal parts in the heat treatment industry. Its purpose is to eliminate residual stress in parts and stabilize part size and structure. Therefore, it has been widely used in precision electromechanical and precision instrument products.

[0004] In the hot and cold cycle treatment of metal parts in the heat treatment industry, independent high temperature boxes and low temperature boxes are generally used to complete high temperature treatment and low temperature treatment respectively. The conversion between high and low temperatures requires manual operation: taking parts out of the high temperature box and putting them into the low temperature box; or taking parts out of the low temperature box and putting them into the high temperature box. However, the surface of the parts taken out of the low temperature oven will quickly frost, and as the temperature rises, the surface frost will turn into water and remain on the surface of the parts, causing marks on the parts during high temperature treatment and even surface corrosion. Therefore, the surface of metal parts that have completed low temperature treatment needs to be dehydrated.

[0005] Metal materials and parts often contain cutting fluids, anti-rust oils, etc. in actual mechanical processing, and need to be cleaned before heat treatment. Currently, water-based cleaning agents are generally used for cleaning, and then rinsed with clean water. Dehydration treatment is also required after rinsing.

[0006] At present, the commonly used dehydration methods and equipment are mainly the following two methods:

[0007] 1) Alcohol dehydration:

[0008] This method is the most commonly used, but alcohol dehydration has the following problems:

[0009] A. Since alcohol and water are miscible, water dissolves in alcohol after alcohol dehydration. When used in large quantities, it is very easy to cause the parts to be not dehydrated completely. After high-temperature treatment, the surface of the parts is prone to corrosion and marks, affecting the surface quality;

[0010] B. High production costs;

[0011] C. Alcohol is a flammable substance, and its large-scale use and storage on site poses a safety hazard;

[0012] D. Some parts have complex structures, and blind holes, narrow grooves, holes and threaded parts are prone to incomplete dehydration and excessive alcohol residue, which leads to great safety hazards in subsequent processes.

[0013] 2) Dehydration with water-cutting agent:

[0014] Water-cutting agent is a liquid with a lower density than water and is immiscible with water. Water-cutting agent dehydration is to dehydrate by taking advantage of the immiscible characteristics of water-cutting agent and water. Usually, after putting the parts with water into the water-cutting agent, the water on the surface of the parts is taken away by the water-cutting agent by flipping, shaking and vibrating. Since the density of the water-cutting agent is lower than that of water, the water removed from the surface of the parts is deposited under the water-cutting agent container, and the water-cutting agent floats on the water. The two are immiscible and have a clear interface.

[0015] This approach has the following advantages:

[0016] A. The dehydration effect is better, especially for grooves, blind holes, narrow gaps and other parts.

[0017] B. In addition to dehydration, since the water-cutting agent is a pure organic solution, the tiny organic impurities adsorbed on the surface can also be removed during dehydration and dissolved in the water-cutting agent, which further improves the surface quality of the parts after cleaning.

[0018] But there are still some shortcomings:

[0019] C. Water-cutting agent and water are both liquids and have density differences, but separation is more difficult.

[0020] D. The containers used by existing water-cutting agents during operation are relatively simple, generally using buckets, basins, plates and other devices. As the amount of cleaning increases, it is not conducive to the discharge and replacement of the water-cutting agent. Summary of the invention

[0021] The purpose of the present invention is to solve the problem that the water-cutting agent and water are difficult to separate in the existing dehydration method using the water-cutting agent, and the container used is not conducive to the discharge and replacement of the water-cutting agent, and to provide an inertial navigation metal parts heat treatment dehydration device and method based on the water-cutting agent.

[0022] To achieve the above purpose, the technical solution provided by the present invention is:

[0023] A heat treatment dehydration device for inertial navigation metal parts based on a water-cutting agent, wherein the water-cutting agent is a liquid that is immiscible with water and has a density less than that of water; the special features thereof are:

[0024] It includes a dehydration box, wherein the angle between the bottom surface of the dehydration box and the horizontal plane is θ, and the parameter of θ is selected as: 10°≤θ≤20°;

[0025] The dehydration box is provided with a partition connected to the side wall and parallel to the horizontal plane, and the height of the partition is equal to the height of the highest point of the bottom surface of the dehydration box;

[0026] The partition is hollow, and the space enclosed by its lower surface, the upper surface of the bottom surface of the dehydration box body and the inner wall of the dehydration box body constitutes a water storage space;

[0027] A drain outlet with a drain valve and an observation tube are provided on the side wall of the water storage space. The bottom of the observation tube is connected to the bottom surface of the dehydration box, and the upper part is higher than the partition. It is used to observe the position of the interface between water and water cutting agent in the water storage space, and the drain outlet is located at the lowest part of the side wall of the water storage space.

[0028] Furthermore, an openable and closable dust cover is provided at the upper end of the dehydration box.

[0029] Furthermore, the dehydration box is in the shape of a cuboid, and universal wheels are arranged at the four top corners of the bottom thereof.

[0030] Furthermore, the angle θ=15°.

[0031] At the same time, the present invention also provides a method for heat treatment and dehydration of inertial navigation metal parts based on water cutting agent, which adopts the above-mentioned inertial navigation metal parts heat treatment and dehydration device based on water cutting agent, and its special feature is that it includes the following steps:

[0032] Step 1, prepare the inertial navigation metal parts to be dehydrated, ensure that the drain valve is in the closed state, and add or discharge a preset amount of water-cutting agent in the dehydration box according to the volume of the inertial navigation metal parts, so that after the inertial navigation metal parts are placed, the upper interface of the water-cutting agent can cover all the parts of the inertial navigation metal parts that need to be dehydrated or decontaminated, and the upper interface of the water-cutting agent is lower than the top of the dehydration box;

[0033] Step 2, put the inertial navigation metal parts into the dehydration box, turn over, shake or vibrate the inertial navigation metal parts, so that the water-cutting agent dehydrates the inertial navigation metal parts and removes soluble impurities thereon, and observe the interface between water and the water-cutting agent through the observation tube. When the interface between water and the water-cutting agent just rises to coincide with the plane where the bottom surface of the partition is located, open the drain valve to drain water, so that the interface between water and the water-cutting agent is lower than the plane where the bottom surface of the partition is located, and then close the drain valve;

[0034] Step 3, take out the inertial navigation metal parts after dehydration and impurity removal, and then determine the color of the water-cutting agent in the dehydration box. If the color meets the requirements, it is determined that the water-cutting agent can be reused; if the color does not meet the requirements, it is determined that the water-cutting agent cannot be reused, and all the water-cutting agents are discharged, and then a preset amount of new water-cutting agent is added to complete the heat treatment dehydration of the inertial navigation metal parts based on the water-cutting agent.

[0035] Furthermore, in step 2, the drain valve is opened to drain water so that the interface between water and the water-cutting agent is lower than the plane where the bottom surface of the partition is located, and then the drain valve is closed specifically:

[0036] Open the drain valve and drain water until all the water is just drained out, then close the drain valve.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The invention provides an inertial navigation metal parts heat treatment dehydration device based on a water-cutting agent, which can conveniently remove the moisture on the parts, and the water-cutting agent and water are easily separated; it has high safety and good reliability, improves production efficiency and product quality, and the water-cutting agent can be reused when conditions are met, and is easy to discharge and update when conditions are not met, saving the consumption of the water-cutting agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic structural diagram of an embodiment of an inertial navigation metal parts heat treatment dehydration device based on a water cutting agent of the present invention;

[0040] Description of reference numerals:

[0041] 1-dehydration box; 2-partition; 3-observation tube; 4-universal wheel; 5-drainage port; 6-dust cover. DETAILED DESCRIPTION

[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0043] The water-cutting agent is a liquid that is immiscible with water and has a density less than that of water.

[0044] A heat treatment dehydration device for inertial navigation metal parts based on water-cutting agent, see Figure 1 ; It includes a rectangular dehydration box 1, wherein the angle between the bottom surface of the dehydration box 1 and the horizontal plane is 15°; the dehydration box 1 in this embodiment is welded from brushed stainless steel plates; the angle of 15° can meet the dehydration requirements of inertial navigation metal parts, and in fact, the angle can also be adjusted within a certain range.

[0045] A partition 2 connected to the side wall and parallel to the horizontal plane is provided in the dehydration box body 1, and its height is equal to the height of the highest point of the bottom surface of the dehydration box body 1; the partition 2 is hollow, and its lower surface and the space enclosed by the upper surface of the bottom surface of the dehydration box body 1 and the inner wall of the dehydration box body 1 constitute a water storage space; a drain port 5 with a drain valve and an observation tube 3 are provided on the side wall of the water storage space, the bottom of the observation tube 3 is connected to the bottom surface of the dehydration box body 1, and the upper part is higher than the partition 2. The observation tube 3 is used to observe the position of the interface between water and the water cutting agent in the water storage space, wherein the drain port 5 is located at the lowest part of the side wall of the water storage space, which is more conducive to the thorough discharge of water. The material of the observation tube 3 in this embodiment is organic glass.

[0046] In order to prevent dust from entering, an openable and closable dust cover 6 is provided at the upper end of the dehydration box 1. The dust cover 6 is in a closed state when not in use.

[0047] In order to facilitate the movement of the dehydration box 1, universal wheels 4 are arranged at the four top corners of the bottom thereof.

[0048] At the same time, this embodiment also provides a method for heat treatment and dehydration of an inertial navigation metal part based on a water cutting agent, using the above-mentioned inertial navigation metal part heat treatment and dehydration device based on a water cutting agent, comprising the following steps:

[0049] Step 1, prepare the inertial navigation metal parts to be dehydrated, ensure that the drain valve is in a closed state, and add or discharge a preset amount of water-cutting agent in the dehydration box 1 according to the volume of the inertial navigation metal parts, so that after the inertial navigation metal parts are placed, the upper interface of the water-cutting agent can cover all the parts of the inertial navigation metal parts that need to be dehydrated or decontaminated, and the upper interface of the water-cutting agent does not exceed the top of the dehydration box 1;

[0050] Step 2, put the inertial navigation metal parts into the dehydration box 1, turn over, shake or vibrate the inertial navigation metal parts, so that the water-cutting agent dehydrates the inertial navigation metal parts and removes soluble impurities thereon, and observe the interface between water and the water-cutting agent through the observation tube 3. When the interface between water and the water-cutting agent just rises to coincide with the plane where the partition 2 is located, open the drain valve to drain water until all the water is just discharged, and then close the drain valve;

[0051] Step 3, take out the inertial navigation metal parts after dehydration and impurity removal, and then judge the color of the water-cutting agent in the dehydration box 1. If the color meets the requirements, it is determined that the water-cutting agent can be reused; if the color does not meet the requirements, it is determined that the water-cutting agent cannot be reused, and the water-cutting agent must be completely discharged, and then a preset amount of new water-cutting agent is added. The color of the water-cutting agent represents the content of soluble impurities therein. When the content of soluble impurities increases, the color of the water-cutting agent will become darker.

Claims

1. A heat treatment and dehydration device for inertial navigation metal parts based on a water-cutting agent, wherein the water-cutting agent is a liquid that is immiscible with water and has a density less than that of water; characterized in that: It comprises a dehydration box (1), wherein the angle between the bottom surface of the dehydration box (1) and the horizontal plane is θ, and the parameter of θ is selected as: 10°≤θ≤20°; The dehydration box (1) is provided with a partition (2) connected to the side wall and parallel to the horizontal plane, and the height of the partition (2) is equal to the height of the highest point of the bottom surface of the dehydration box (1); The partition plate (2) is hollow, and the space enclosed by its lower surface, the upper surface of the bottom surface of the dehydration box body (1) and the inner wall of the dehydration box body (1) constitutes a water storage space; A drain port (5) with a drain valve and an observation tube (3) are provided on the side wall of the water storage space. The bottom of the observation tube (3) is connected to the bottom surface of the dehydration box (1), and the upper part is higher than the partition (2). The observation tube (3) is used to observe the position of the interface between water and the water-cutting agent in the water storage space, wherein the drain port (5) is located at the lowest part of the side wall of the water storage space.

2. According to claim 1, a heat treatment and dehydration device for inertial navigation metal parts based on water-cutting agent is characterized in that: The upper end of the dehydration box (1) is provided with an openable and closable dust cover (6).

3. According to claim 2, a heat treatment and dehydration device for inertial navigation metal parts based on water-cutting agent is characterized in that: The dehydration box (1) is in the shape of a rectangular parallelepiped, and universal wheels (4) are arranged at the four top corners of the bottom.

4. According to claim 3, a heat treatment and dehydration device for inertial navigation metal parts based on water-cutting agent is characterized in that: The θ=15°.

5. A method for heat treatment and dehydration of inertial navigation metal parts based on water cutting agent, using a device for heat treatment and dehydration of inertial navigation metal parts based on water cutting agent according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1, prepare the inertial navigation metal parts to be dehydrated, ensure that the drain valve is in a closed state, and according to the volume of the inertial navigation metal parts, add or discharge a preset amount of water-cutting agent in the dehydration box (1), so that after the inertial navigation metal parts are placed, the upper surface of the water-cutting agent can cover all the parts of the inertial navigation metal parts that need to be dehydrated or cleaned, and the upper surface of the water-cutting agent is lower than the top of the dehydration box (1); Step 2, placing the inertial navigation metal parts into the dehydration box (1), turning, shaking or vibrating the inertial navigation metal parts, so that the water-cutting agent dehydrates the inertial navigation metal parts and removes soluble impurities thereon, and at the same time observing the interface between water and the water-cutting agent through the observation tube (3), when the interface between water and the water-cutting agent just rises to coincide with the plane where the bottom surface of the partition (2) is located, opening the drain valve to drain water, so that the interface between water and the water-cutting agent is lower than the plane where the bottom surface of the partition (2) is located, and then closing the drain valve; Step 3, take out the inertial navigation metal parts after dehydration and impurity removal, and then determine the color of the water-cutting agent in the dehydration box (1). If the color meets the requirements, it is determined that the water-cutting agent can be reused; if the color does not meet the requirements, it is determined that the water-cutting agent cannot be reused, and the water-cutting agent is completely discharged, and then a preset amount of new water-cutting agent is added to complete the heat treatment dehydration of the inertial navigation metal parts based on the water-cutting agent.

6. The method for heat treatment and dehydration of inertial navigation metal parts based on water-cutting agent according to claim 5, characterized in that: In step 2, the drain valve is opened to drain water so that the interface between water and the water-cutting agent is lower than the plane where the bottom surface of the partition (2) is located, and then the drain valve is closed. Specifically: Open the drain valve and drain water until all the water is just drained out, then close the drain valve.

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