CN109571919B

CN109571919B - Non-metal thin-wall part shape righting tool and shape righting method

Info

Publication number: CN109571919B
Application number: CN201811427879.2A
Authority: CN
Inventors: 于大波; 郭元超; 胡佩俊; 马绍健
Original assignee: Shanghai Electric Group Corp
Current assignee: Shanghai Electric Group Corp
Priority date: 2018-11-27
Filing date: 2018-11-27
Publication date: 2022-02-25
Anticipated expiration: 2038-11-27
Also published as: CN109571919A

Abstract

The invention discloses a non-metal thin-wall part shape righting tool and a shape righting method, and belongs to the field of machining. The non-metal thin-wall part shape righting tool comprises a base, an inner core and an outer barrel, wherein an inner core groove and an outer barrel groove are formed in the base, the inner core is installed in the inner core groove, the outer barrel is installed in the outer barrel groove, so that the inner core and the outer barrel are detachably fixed on the base, the outer barrel is sleeved on the periphery of the inner core, and a shape righting space is formed between the inner wall of the outer barrel and the outer wall of the inner core. Aiming at the technical problem of deformation of the non-metal thin-wall part, the shape correcting space between the inner core and the outer cylinder can automatically correct the non-metal thin-wall part under the heating condition, and the provided tool has the advantages of simple structure, easy manufacture and convenient operation; the provided orthopedic method realizes full orthopedic under the condition of ensuring that the material is intact.

Description

Non-metal thin-wall part shape righting tool and shape righting method

Technical Field

The invention belongs to the field of machining, and particularly relates to a shape righting tool and a shape righting method for a non-metal thin-wall part.

Background

Thin-walled parts (the wall thickness is less than 10 mm) are often deformed to a certain degree after final processing due to small wall thickness and poor rigidity, so that the pattern precision cannot be met. It needs to be reshaped to meet the part precision requirements.

In the prior art, a part cold correction and hot correction process technical means is generally adopted, namely when the part is heated or not heated, reversible deformation plastic smashing or pressing is carried out on the maximum deformation position of the metal part, and according to the deformation characteristics and the state of a workpiece, a reversible heating method can be adopted for correction, such as a rack part with bending deformation in a rough cutting tooth state, but the process is suitable for the condition that each part of the part has allowance and is not suitable for the condition that the part with the precision requirement is deformed after final processing. After all thin-walled parts (wall thickness below 10 mm) are machined, severe body deformation occurs, and almost no technological rescue measures exist. Once the final assembly fails to meet the equipment requirements, remakes can only be scrapped.

Compared with a metal part with the same wall thickness, the nonmetal thin-wall part has poorer rigidity, and a part body of the part is easier to deform in machining under the combined action of cutting force and clamping force in machining. Based on the physical characteristics of the non-metal material, the method is not suitable for adopting the shape righting method, but is suitable for adopting a heat setting shape righting mode, but the prior art does not disclose a heat setting shape righting tool and a process method aiming at the deformation of the non-metal material arc thin-wall part after final processing.

In view of the above, it is an urgent problem in the art to overcome the above-mentioned drawbacks of the prior art.

Disclosure of Invention

In order to overcome the technical problem that the prior art lacks a heat setting orthopedic tool and a technological method for a non-metal thin-wall part, the invention provides a non-metal thin-wall part orthopedic tool, which comprises the following components:

the inner core and the outer barrel are detachably fixed on the base, the outer barrel is sleeved on the periphery of the inner core, and a shape correcting space is formed between the inner wall of the outer barrel and the outer wall of the inner core.

The orthopedic space is designed according to the target shape of the non-metal thin-wall part, and the aim is to place the non-metal thin-wall part into the orthopedic space for heating and orthopedic, so that the non-metal thin-wall part is automatically extended back and filled in the orthopedic space, is bent in a telescopic manner, fits the orthopedic space, and accordingly achieves the target shape and completes orthopedic.

Further optionally, the base is provided with an inner core groove and an outer barrel groove, the inner core is installed in the inner core groove, and the outer barrel is installed in the outer barrel groove. The base is provided with the groove, and the inner core and the outer cylinder are arranged in the groove, so that the inner core and the outer cylinder can be effectively fixed, a fixed orthopedic space is formed, and the assembly and disassembly operation are very convenient.

Optionally, the inner core and the outer cylinder are both cylinders, and the inner core groove and the outer cylinder groove are concentric annular grooves.

The shapes of the inner core and the outer cylinder are designed according to the shape of the nonmetal thin-wall part, and the aim is to form an orthopedic space matched with the target shape of the nonmetal thin-wall part. The inner core groove and the outer cylinder groove are used for fixing the inner core and the outer cylinder, so that the inner core groove and the outer cylinder groove are matched with the mounting parts of the inner core and the outer cylinder in structure. When the arc-shaped thin-wall part is reshaped, the inner core and the outer cylinder are preferably cylinders, and the inner core groove and the outer cylinder groove are concentric annular grooves. When the non-metal thin-wall part is a thin-wall part with other shapes, the shapes of the inner core and the outer cylinder and the structures of the inner core groove and the outer cylinder groove are adjusted correspondingly, for example, when the non-metal thin-wall part is an elliptical arc section thin-wall part, the inner core and the outer cylinder can be designed into an elliptical cylinder, and the inner core groove and the outer cylinder groove can be designed into an elliptical ring groove.

Optionally, temperature measuring holes are distributed on the base, the temperature measuring holes penetrate through the base, and the temperature measuring holes are arranged between the inner core groove and the outer cylinder groove.

The temperature measuring hole has the effect that when the nonmetal thin-walled part is heated and reshaped, an infrared thermometer can be used for measuring the temperature of the nonmetal thin-walled part close to the base through the temperature measuring hole. The temperature of the nonmetal thin-walled part is used as a reference basis for judging the temperature of the nonmetal thin-walled part.

Optionally, the outer cylinder, the inner core and the base are made of carbon steel.

Preferably, the inner core and the outer cylinder are cylinders with the wall thickness of 35mm-45 mm. In the wall thickness range, the tool has better rigidity, good heat conduction efficiency and tissue temperature equalization performance, saves materials and reduces the weight of the tool.

Optionally, the non-metal thin-walled part is made of PE material.

In addition, the non-metal thin-wall part can also be made of other non-metal materials, such as PA (polyamide), PC (polycarbonate) and the like.

In addition, the invention also discloses a non-metal thin-wall part orthopedic method, which adopts the non-metal thin-wall part orthopedic tool and comprises the following steps:

s1: the nonmetal thin-wall part is arranged in the orthopedic space, so that the improper installation position is avoided;

s2: an electric heating belt is wound on the outer wall of the outer barrel, heat is transferred to the non-metal thin-walled part through the heating outer barrel, and the non-metal thin-walled part is heated and reshaped;

s3: cooling the orthopedic tool so as to cool the nonmetal thin-walled part in the orthopedic space;

s4: and removing the outer cylinder and taking out the nonmetal thin-walled part.

If the installation position of the non-metal thin-wall part in the orthopedic space is improper, the non-metal part cannot meet the requirement of ring-shaped precision after orthopedic, and the orthopedic fails. When the non-metal part is installed, the axis of the non-metal thin-wall part is coaxial with the axis of the orthopedic space, or when the end face of the non-metal thin-wall part is perpendicular to the installation axis of the tool, the non-metal thin-wall part is installed in the tool and the end face of the non-metal thin-wall part close to the base is in complete contact with the base, and at the moment, the installation position of the non-metal thin-wall part in the orthopedic space is considered to be correct. In addition, the mode of winding the electric heating belt on the outer wall of the outer barrel is adopted for heating, the operation is convenient, the heating is uniform, and the heating power is convenient to control.

Further, in step S2, the non-metal thin-walled member is heated specifically by the following steps:

s21: heating the outer wall of the outer cylinder to a first preset temperature;

s22: and carrying out primary temperature equalization, and stabilizing the nonmetal thin-wall part and the outer barrel at a first preset temperature by adjusting the heating power of the electric heating belt. The purpose of the step is to carry out preliminary temperature equalization on the heated system in a low-temperature state, and prepare for the whole heated system to enter a final temperature equalization and shape correction state in a high-temperature state;

s23: carrying out second-stage heating, and heating the outer wall of the outer barrel to a second preset temperature;

s24: and carrying out secondary temperature equalization and thermal shape correction, and stabilizing the nonmetal thin-wall part at a second preset temperature by adjusting the heating power of the electric heating belt. The purpose of this step is to ensure that the whole heated system enters the final temperature equalization state and is subjected to thermal straightening under the high temperature state.

Through sectional heating and temperature equalization, the temperature of the tool and the temperature of the nonmetal thin-wall part tend to be consistent, temperature control is facilitated, the shape correcting quality is guaranteed, and the heat setting efficiency and effect are improved.

The second preset temperature is determined by the material property of the non-metal thin-wall part to be reshaped, and aims to enable the non-metal material to reach a micro-plastic deformation state (just begin to soften), so that the non-metal thin-wall part can automatically adjust the shape in the reshaping space and cannot be completely softened.

Different non-metal materials have different complete softening temperatures, the softening temperatures of non-metal materials of non-metal orthopedic parts made of the same material are different due to different production states of production batches, and the second preset temperature is the micro-plastic deformation temperature at which the non-metal materials are just softened.

Further, the first preset temperature is 45-50 ℃, and the second preset temperature is 95-100 ℃. The softening temperature of the PE material is 105 ℃ (+/-2 ℃), and when the second preset temperature is in the temperature range, the nonmetal thin-wall part of the PE material can be stabilized in a micro plastic deformation shape state, so that the PE material can effectively shape.

Further, the time of the primary temperature equalization is 2h-3h, and the time of the secondary temperature equalization and the thermal orthopedic is 8h-10 h. The first heat preservation time is set within the heat preservation time range, so that the effective temperature equalization of the tool and the nonmetal thin-wall part in a low-temperature state can be realized. The time for the second heat preservation is set within the heat preservation time range, so that the nonmetal thin-walled part can be uniformly heated, can be fully reshaped under the action of a reshaping space, and can eliminate local stress in the material so as to prevent local deformation after cooling, so that the temperature equalization and reshaping work in a high-temperature state is smoother, and the reshaping quality is ensured.

Further, in the first-stage heating process and the second-stage heating process, the temperature rising speed of the outer wall of the outer cylinder does not exceed 40-50 ℃ per hour. In the temperature rise speed range, the metal tool can be prevented from generating cracks, and the metal material is prevented from generating large thermal stress due to too fast heating, so that the tool is prevented from being damaged. Meanwhile, the phenomenon that the orthopedic quality is influenced due to the occurrence of the state of great temperature difference among the parts of the heated system is avoided

Further, in step S24, the basis for determining that the nonmetal thin-walled part is stable at the second preset temperature is: the temperature of the nonmetal thin-wall part close to the base and the temperature of the outer wall of the outer barrel are both stabilized at a second preset temperature. By the method, the stability of the nonmetal thin-wall part at the second preset temperature can be accurately evaluated.

Further, the detection method of the temperature of the nonmetal thin-wall part close to the base seat end comprises the following steps: and detecting the temperature of the non-metal thin-wall part close to the base seat end through the temperature measuring hole by using an infrared thermometer. Therefore, the effect of determining the local temperature condition of the nonmetal thin-wall part from the outside of the tool is achieved.

Compared with the prior art, the non-metal thin-wall part shape righting tool and the shape righting method provided by the invention have the following advantages: firstly, the orthopedic problem that the non-metal thin-wall part deforms after being processed is solved; secondly, the self material of the non-metal thin-wall part is automatically adjusted by utilizing the orthopedic space formed between the inner core and the outer cylinder to be orthopedic into a target shape, and the orthopedic device is particularly suitable for the orthopedic problem of no allowance after final processing; thirdly, the tool consists of a base, an outer barrel and contents, and is simple in structure, easy to manufacture and convenient to operate; fourthly, the orthopedic method adopts a multi-section heating mode to prevent the material from being damaged; and fifthly, the shape righting method enables the non-metal thin-wall part to be maintained in a micro-plastic deformation state through heat preservation, so that the full shape righting of the non-metal thin-wall part is realized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the apparatus and method consistent with the invention and, together with the detailed description, serve to explain the advantages and principles consistent with the invention. In the drawings:

fig. 1 is a schematic structural diagram of a non-metal thin-wall part orthopedic tool provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a base provided in embodiment 1 of the present invention;

fig. 3 is a schematic view of the bottom of the base provided in embodiment 1 of the present invention.

FIG. 4 is a schematic structural view of an inner core provided in example 1 of the present invention;

FIG. 5 is a schematic structural view of an outer tub provided in embodiment 1 of the present invention;

FIG. 6 is a structural schematic diagram of a medical rotating cabin body of a first non-metal thin-wall part to be orthopedic according to embodiment 1 of the invention;

FIG. 7 is a structural schematic diagram of a medical rotating cabin upper cover of a second non-metal thin-wall part to be orthopedic according to embodiment 1 of the invention;

fig. 8 is a cross-sectional view of the device for reshaping the medical rotating cabin upper cover of the first non-metal thin-wall part in the method for reshaping the non-metal thin-wall part provided by the embodiment 2 of the invention;

fig. 9 is a schematic structural diagram of a supporting plate filled with a notch of a medical rotating cabin body of a second non-metal thin-wall part in the orthopedic method for a non-metal thin-wall part according to embodiment 3 of the present invention;

FIG. 10 is a schematic structural diagram of a supporting plate in the method for reshaping a non-metallic thin-walled workpiece according to embodiment 3 of the present invention;

fig. 11 is a cross-sectional view of the device for reshaping the medical rotating trunk body of the second thin-walled non-metallic member in the method for reshaping the thin-walled non-metallic member according to embodiment 4 of the present invention.

Description of the reference numerals

1-base, 2-inner core, 3-outer cylinder, 4-orthopedic space, 101-inner core groove, 102-outer cylinder groove, 103-temperature measuring hole, 5-medical rotating cabin body, 501-notch of medical rotating cabin body, 6-medical rotating cabin upper cover and 7-supporting plate

Detailed Description

The following describes embodiment 1 of the present invention in detail with reference to the drawings. However, the present invention is not limited to the embodiments described below. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other, and the technical idea of the present invention may be implemented in combination with other known techniques or other techniques identical to those known techniques.

Example 1

The embodiment 1 of the invention provides a non-metal thin-wall part correcting tool, fig. 1 is a schematic structural diagram of the non-metal thin-wall part correcting tool, and referring to fig. 1, the non-metal thin-wall part correcting tool includes: the inner core and the outer barrel are detachably fixed on the base, the outer barrel is sleeved on the periphery of the inner core, and an orthopedic space 4 is formed between the inner wall of the outer barrel and the outer wall of the inner core.

Fig. 2 is a plan view of the base 1 provided in embodiment 1 of the present invention, and fig. 3 is a bottom schematic view of the base 1 provided in embodiment 1 of the present invention. Referring to fig. 2 and 3, the base 1 is provided with an inner core groove 101 and an outer cylinder groove 102, and the inner core groove 101 and the outer cylinder groove 102 are concentric annular grooves. In another embodiment, when the non-metal thin-walled piece is an elliptical arc-segment thin-walled piece, the inner core groove and the outer cylindrical groove can be designed into elliptical ring grooves.

Preferably, the height of the base 1 is 400mm-500 mm.

Preferably, the distance from the bottom of the inner core groove 101 and the outer cylinder groove 102 to the bottom of the base 1 is 80mm-100 mm.

Optionally, temperature measuring holes 103 are distributed on the base 1, the temperature measuring holes 103 penetrate through the base 1, and the temperature measuring holes 103 are arranged between the inner core groove 101 and the outer cylinder groove 102. In another embodiment, the base 1 may not have the temperature measuring hole 103.

Fig. 4 and 5 are schematic structural views of an inner core 2 and an outer cylinder 3 provided in embodiment 1 of the present invention, and in conjunction with fig. 4 and 5, the inner core 2 and the outer cylinder 3 are both cylinders. The inner core 2 is installed in the inner core groove 101, and the outer cylinder 3 is installed in the outer cylinder groove 102. In another embodiment, when the non-metal thin-walled piece is an elliptical arc-segment thin-walled piece, the inner core and the outer cylinder can be designed into an elliptical cylinder.

Preferably, the base 1, the inner core 2 and the outer cylinder 3 may be made of carbon steel. In other embodiments, other metallic materials may be used instead of carbon steel.

Preferably, the inner core 2 and the outer cylinder 3 are both cylinders with the wall thickness of 35mm-45 mm.

Fig. 6 and 7 are schematic structural views of a first non-metal thin-wall part and a second non-metal thin-wall part to be reshaped respectively. Referring to fig. 6, the first non-metal thin-wall part is a medical rotating chamber body 5, and the medical rotating chamber body 5 is a cylindrical thin-wall part with a notch. Referring to fig. 7, the second non-metal thin-wall part is a medical rotating cabin upper cover 6, and the medical rotating cabin upper cover 6 is an arc-shaped thin-wall part. The gap on the medical rotating cabin body 5 is used for installing the medical rotating cabin upper cover 6, so that the size of the gap on the medical rotating cabin body 5 is matched with that of the medical rotating cabin upper cover 6.

The first nonmetal thin-wall part and the second nonmetal thin-wall part are both made of PE (polyethylene) materials. In other embodiments, the reshaping of non-metallic thin-walled pieces of other materials is equally feasible. For example, PA (polyamide), PC (polycarbonate) and the like

Example 2

In the method for reshaping a non-metal thin-walled member provided in embodiment 2 of the present invention, when the first non-metal thin-walled member medical rotating cabin body 5 and the second non-metal thin-walled member medical rotating cabin upper cover 6 (as shown in fig. 8) are reshaped, the step of reshaping by using the non-metal thin-walled member reshaping tool provided in embodiment 1 of the present invention is as follows:

s1: a nonmetal thin-wall part is arranged in the orthopedic space 4, so that the improper installation position is avoided;

preferably, the non-metal thin-wall part is close to the end surface of the base and is contacted with the end surface of the base 1.

Preferably, when the first nonmetal thin-wall part medical rotating cabin body 5 is used for correcting the shape, the nonmetal thin-wall part correcting tool is installed by placing the notch side at the end close to the base.

S2: an electric heating belt is wound on the outer wall of the outer cylinder 3, heat is transferred to the non-metal thin-walled part through the heating outer cylinder 3, and the non-metal thin-walled part is heated and reshaped;

the method specifically comprises the following steps of heating the nonmetal thin-wall part:

s21: heating the outer wall of the outer cylinder 3 to a first preset temperature, wherein the first preset temperature is 45-50 ℃, and preferably 50 ℃;

s22: carrying out primary temperature equalization, and stabilizing the nonmetal thin-walled piece and the outer cylinder at a first preset temperature by adjusting the heating power of the electric heating belt, wherein the primary temperature equalization time is 2-3 h, and the temperature rise speed of the outer wall of the outer cylinder is not more than 40-50 ℃ per hour;

s23: carrying out second-stage heating, namely heating the outer wall of the outer barrel to a second preset temperature, wherein the second preset temperature is 95-100 ℃, and the temperature rising speed of the outer wall of the outer barrel does not exceed 40-50 ℃ per hour;

s24: and performing secondary temperature equalization and thermal orthopedic treatment, and stabilizing the non-metal thin-wall part at a second preset temperature by adjusting the heating power of the electric heating belt, wherein the time of secondary heat preservation is 8-10 h.

The judgment basis that the nonmetal thin-wall part is stabilized at the first/second preset temperature is as follows: the temperature of the nonmetal thin-wall part close to the base end and the temperature of the outer wall of the outer barrel 3 are both stabilized at a first preset temperature/a second preset temperature. In another embodiment, when the temperature measuring hole 103 is not present on the base 1, the non-metal thin-wall part is stable at the first/second preset temperature according to the following formula: the outer wall temperature of the outer cylinder 3 is stabilized at a first/second preset temperature.

The temperature of the nonmetal thin-wall part close to the base end is measured by an infrared temperature measuring instrument through the temperature measuring hole 103. The temperature of the outer wall of the outer barrel 3 is measured by adopting an infrared temperature measuring instrument to measure the temperature of a slightly exposed part between the winding of the electric heating tape on the outer wall of the outer barrel 3.

S3: the orthopedic tool is cooled, so that the nonmetal thin-wall part in the orthopedic space is cooled, and natural air cooling can be adopted.

S4: after the orthopedic operation is finished, the electric heating belt wound on the outer wall of the outer cylinder 3 is unfastened, the outer cylinder 3 is disassembled, and the nonmetal thin-wall part is taken out.

In other embodiments, the orthopedic tool is also applicable to other non-metal arc thin-wall parts which are not the medical rotating cabin body 5 and the medical rotating cabin upper cover 6.

Example 3

Compared with embodiment 2, the non-metal thin-walled part orthopedic method provided by embodiment 3 of the invention has the following differences: when the second non-metal thin-wall part medical rotating cabin body 5 is reshaped, referring to fig. 9, after the supporting plate 7 is used for filling the notch on the medical rotating cabin body 5, a complete cylinder is formed, and then the non-metal thin-wall part reshaping tool is installed for reshaping.

As shown in fig. 10, the supporting plate 7 is a metal arc plate, and the size of the supporting plate 7 is matched with the size of the notch on the medical rotating chamber body 5.

Preferably, the interference of the size of the support plate 7 is 0.25mm-0.30mm, so as to ensure that the support plate 7 is fastened on the medical rotating chamber body 5 due to slight tension when supporting.

Example 4

Compared with embodiment 2, the non-metal thin-walled part orthopedic method provided by embodiment 4 of the present invention has the following differences: when the second non-metal thin-wall medical rotating cabin body 5 is reshaped, as shown in fig. 11, the reshaped first non-metal thin-wall medical rotating cabin upper cover 6 is used as the supporting plate 7 to fill the notch on the medical rotating cabin body 5, and then the non-metal thin-wall orthopedic tool is installed to reshape.

The terms "first" and "second" as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another, unless otherwise specified. Similarly, modifiers similar to "about", "approximately" or "approximately" that occur before a numerical term herein typically include the same number, and their specific meaning should be read in conjunction with the context. Similarly, unless a specific number of a claim recitation is intended to cover both the singular and the plural, and also that claim may include both the singular and the plural.

In the description of the specific embodiments above, the use of the directional terms "upper", "lower", "left", "right", "top", "bottom", "vertical", "transverse", and "lateral", etc., are for convenience of description only and should not be considered limiting. In addition, the y-axis direction shown in fig. 1 to 11 is the axial direction.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. The non-metal thin-wall part shape righting tool is characterized by comprising a base, an inner core, an outer cylinder and a supporting plate, wherein the inner core and the outer cylinder are detachably fixed on the base, the outer cylinder is sleeved on the periphery of the inner core, and a shape righting space is formed between the inner wall of the outer cylinder and the outer wall of the inner core;

an inner core groove and an outer barrel groove are formed in the base, the inner core is installed in the inner core groove, and the outer barrel is installed in the outer barrel groove;

a plurality of temperature measuring holes are uniformly distributed on the base, are arranged between the inner core groove and the outer cylinder groove and penetrate through the base;

the nonmetal thin-wall part is a cylindrical part with a notch;

the gap is filled with a support plate to form a complete cylinder and then loaded into the orthopedic space.

2. The non-metallic thin walled member orthopedic tool according to claim 1, characterized in that the inner core and the outer barrel are both cylinders, and the inner core groove and the outer barrel groove are concentric annular grooves.

3. The orthopedic tool for the non-metal thin-walled parts according to claim 1 or 2, characterized in that the outer cylinder, the inner core and the base are made of carbon steel.

4. The orthopedic tool for non-metal thin-walled parts according to claim 3, characterized in that the wall thickness of the outer cylinder is 35mm to 45 mm.

5. The orthopedic tool for non-metallic thin-walled parts according to claim 1 or claim, characterized in that the non-metallic thin-walled part is PE material.

6. The use method of the non-metal thin-walled piece orthopedic tool according to any one of claims 1 to 5, characterized by comprising the following steps:

7. The use method according to claim 6, wherein the non-metal thin-walled part is heated in step S2 by the following steps:

s22: carrying out primary temperature equalization, and stabilizing the nonmetal thin-walled piece and the outer cylinder at a first preset temperature by adjusting the heating power of the electric heating belt;

s24: and carrying out secondary temperature equalization and thermal shape correction, and stabilizing the nonmetal thin-wall part at a second preset temperature by adjusting the heating power of the electric heating belt.

8. The use according to claim 7, wherein said first preset temperature is 45 ℃ -50 ℃ and said second preset temperature is 95 ℃ -100 ℃; the time of the primary temperature equalization is 2h-3h, and the time of the secondary temperature equalization and the thermal orthopedic is 8h-10 h; in the first-stage heating process and the second-stage heating process, the temperature rising speed of the outer wall of the outer cylinder does not exceed 40-50 ℃ per hour.

9. The use method according to claim 7, wherein in the step S24, the non-metal thin-walled part is stable at the second preset temperature according to the following judgment: the temperature of the nonmetal thin-wall part close to the base and the temperature of the outer wall of the outer barrel are both stabilized at a second preset temperature.

10. Use according to claim 9, characterized in that;

the detection method of the temperature of the nonmetal thin-wall part close to the base comprises the following steps: and detecting the temperature of the non-metal thin-wall part close to the base seat end through the temperature measuring hole by using an infrared thermometer.