阅读说明：本技术 一种等温锻造工艺参数确定方法 (Isothermal forging process parameter determination method ) 是由 汤春尧 周健 李挺 张研 于 2021-08-07 设计创作，主要内容包括：本申请属于飞机钛合金制件等温锻造工艺参数确定技术领域,具体涉及一种等温锻造工艺参数确定方法,包括：构建等温锻造模具及其胚料的三维模型；基于等温锻造模具及其胚料的三维模型,构建等温锻造模具及其胚料的有限元模型；设定不同的工艺参数,基于等温锻造模具及其胚料的有限元模型,模拟等温锻造过程,得到胚料的等温锻造制件；根据得到的等温锻造制件的特性,确定相应的工艺参数。(The application belongs to the technical field of determining isothermal forging process parameters of titanium alloy workpieces of airplanes, and particularly relates to a method for determining isothermal forging process parameters, which comprises the following steps: constructing a three-dimensional model of an isothermal forging die and a blank thereof; constructing a finite element model of the isothermal forging die and the blank thereof based on the three-dimensional model of the isothermal forging die and the blank thereof; setting different technological parameters, and simulating an isothermal forging process based on the isothermal forging die and a finite element model of the blank thereof to obtain an isothermal forging part of the blank; and determining corresponding process parameters according to the characteristics of the obtained isothermal forging product.)

1. A method for determining isothermal forging process parameters is characterized by comprising the following steps:

constructing a three-dimensional model of an isothermal forging die and a blank thereof;

constructing a finite element model of the isothermal forging die and the blank thereof based on the three-dimensional model of the isothermal forging die and the blank thereof;

setting different technological parameters, and simulating an isothermal forging process based on the isothermal forging die and a finite element model of the blank thereof to obtain an isothermal forging part of the blank;

and determining corresponding process parameters according to the characteristics of the obtained isothermal forging product.

2. The isothermal forging process parameter determination method of claim 1,

the method for constructing the three-dimensional model of the isothermal forging die and the blank thereof comprises the following steps:

and constructing a three-dimensional model of the isothermal forging die and the blank thereof by CATIA.

3. The isothermal forging process parameter determination method of claim 1,

the method comprises the following steps of constructing a finite element model of the isothermal forging die and the blank thereof based on a three-dimensional model of the isothermal forging die and the blank thereof, and specifically comprises the following steps:

and (4) introducing the three-dimensional models of the isothermal forging die and the blank thereof into the PATRAN to construct a finite element model of the isothermal forging die and the blank thereof.

4. The isothermal forging process parameter determination method of claim 1,

the finite element model based on the isothermal forging die and the blank thereof is supposed to be in the process of simulating isothermal forging:

the isothermal forging die is a rigid body;

the components in the isothermal forging blank are uniform, and the isotropy is free from segregation;

the isothermal forging die and the blank thereof are in an isothermal state.

5. The isothermal forging process parameter determination method of claim 1,

the setting of different process parameters comprises the following steps:

setting different isothermal forging deformation temperatures;

different isothermal forging deformation rates were set.

Technical Field

The application belongs to the technical field of determining isothermal forging process parameters of titanium alloy workpieces of airplanes, and particularly relates to a method for determining isothermal forging process parameters.

Background

Isothermal forging is low strain rate die forging which is carried out under the condition that the temperature of a die is heated to be the same as or close to the forming temperature of a blank, as shown in figure 1, the die and blank have the characteristics of small temperature difference, low strain rate, small allowance of formed parts, high precision, low residual stress and the like in the blank forming process.

A large number of parts on the airplane are isothermally forged into a large-scale integral structural component in order to ensure the mechanical property of the parts and reduce the quality of the airplane, wherein a titanium alloy product has large deformation resistance, poor thermal conductivity, large viscosity and poor fluidity, the molding quality of the product is greatly influenced by process parameters, the mass tolerance range of the obtained product is large, and the use of the product is influenced.

At present, the quality control of the titanium alloy part formed by isothermal forging on the airplane is mainly based on post control, namely after the titanium alloy part is produced, the quality of the titanium alloy part is detected, and technological parameter adjustment is carried out according to a detection result, so that the efficiency is low, the period is long, and the resource waste is serious.

The present application has been made in view of the above-mentioned technical drawbacks.

It should be noted that the above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and the above background disclosure should not be used for evaluating the novelty and inventive step of the present application without explicit evidence to suggest that the above content is already disclosed at the filing date of the present application.

Disclosure of Invention

It is an object of the present application to provide an isothermal forging process parameter determination method to overcome or mitigate at least one aspect of the technical deficiencies known to exist.

The technical scheme of the application is as follows:

an isothermal forging process parameter determination method, comprising:

constructing a three-dimensional model of an isothermal forging die and a blank thereof;

constructing a finite element model of the isothermal forging die and the blank thereof based on the three-dimensional model of the isothermal forging die and the blank thereof;

setting different technological parameters, and simulating an isothermal forging process based on the isothermal forging die and a finite element model of the blank thereof to obtain an isothermal forging part of the blank;

and determining corresponding process parameters according to the characteristics of the obtained isothermal forging product.

According to at least one embodiment of the present application, in the above-mentioned isothermal forging process parameter determining method, the constructing a three-dimensional model of an isothermal forging die and a billet thereof specifically includes:

and constructing a three-dimensional model of the isothermal forging die and the blank thereof by CATIA.

According to at least one embodiment of the present application, in the isothermal forging process parameter determining method, the step of constructing a finite element model of the isothermal forging die and the blank thereof based on the three-dimensional model of the isothermal forging die and the blank thereof specifically includes:

and (4) introducing the three-dimensional models of the isothermal forging die and the blank thereof into the PATRAN to construct a finite element model of the isothermal forging die and the blank thereof.

According to at least one embodiment of the present application, in the above-mentioned method for determining isothermal forging process parameters, the finite element model based on the isothermal forging die and the billet thereof is assumed to be:

the isothermal forging die is a rigid body;

the components in the isothermal forging blank are uniform, and the isotropy is free from segregation;

the isothermal forging die and the blank thereof are in an isothermal state.

According to at least one embodiment of the present application, in the above method for determining isothermal forging process parameters, the setting different process parameters includes:

setting different isothermal forging deformation temperatures;

different isothermal forging deformation rates were set.

Drawings

FIG. 1 is a schematic illustration of isothermal forging provided by embodiments of the present application;

fig. 2 is a flowchart of a method for determining parameters of an isothermal forging process according to an embodiment of the present disclosure.

For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; further, the drawings are for illustrative purposes, and terms describing positional relationships are limited to illustrative illustrations only and are not to be construed as limiting the patent.

Detailed Description

In order to make the technical solutions and advantages of the present application clearer, the technical solutions of the present application will be further clearly and completely described in the following detailed description with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are only used for explaining the present application, but not limiting the present application. It should be noted that, for convenience of description, only the parts related to the present application are shown in the drawings, other related parts may refer to general designs, and the embodiments and technical features in the embodiments in the present application may be combined with each other to obtain a new embodiment without conflict.

In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the context of describing the application is not to be construed as an absolute limitation on the number, but rather as the presence of at least one. The word "comprising" or "comprises", and the like, when used in this description, is intended to specify the presence of stated elements or items, but not the exclusion of other elements or items.

Further, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are used in the description of the invention in a generic sense, e.g., connected as either a fixed connection or a removable connection or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in this application according to the specific situation.

The present application is described in further detail below with reference to figures 1-2.

An isothermal forging process parameter determination method, comprising:

constructing a three-dimensional model of an isothermal forging die and a blank thereof;

constructing a finite element model of the isothermal forging die and the blank thereof based on the three-dimensional model of the isothermal forging die and the blank thereof;

setting different technological parameters, and simulating an isothermal forging process based on the isothermal forging die and a finite element model of the blank thereof to obtain an isothermal forging part of the blank;

and determining corresponding process parameters according to the characteristics of the obtained isothermal forging product.

As for the isothermal forging process parameter determination method disclosed in the above embodiment, those skilled in the art can understand that a finite element model of an isothermal forging die and a blank thereof is constructed based on a constructed three-dimensional model of the isothermal forging die and the blank thereof, an isothermal forging process is simulated under different set process parameters to obtain an isothermal forging product of the blank, and corresponding process parameters are determined by analyzing characteristics of the obtained isothermal forging product.

For the isothermal forging process parameter determination method disclosed in the above embodiment, it can be further understood by those skilled in the art that the isothermal forging process parameter determination method can be used for determining isothermal forging process parameters of titanium alloy workpieces on an aircraft, when the isothermal forging process parameter determination method is used for determining isothermal forging process parameters of titanium alloy workpieces on an aircraft, where the blank refers to a titanium alloy blank, in order to control the quality of the titanium alloy workpieces, different process parameters are set, which refers to setting isothermal forging process parameters that have an important influence on the quality control of the titanium alloy workpieces, and by analyzing the quality-related characteristics of the isothermal forging titanium alloy workpieces obtained through simulation, corresponding process parameters are determined, and as actual process parameters of isothermal forging of the titanium alloy workpieces, effective quality control of the isothermal forging titanium alloy workpieces can be rapidly achieved, and the control mode is pre-control, so that resources can be greatly saved, avoiding waste.

In some optional embodiments, in the above method for determining isothermal forging process parameters, the constructing a three-dimensional model of an isothermal forging die and a blank thereof specifically includes:

and constructing a three-dimensional model of the isothermal forging die and the blank thereof by CATIA.

In some optional embodiments, in the above method for determining isothermal forging process parameters, the step of constructing a finite element model of the isothermal forging die and the blank thereof based on the three-dimensional model of the isothermal forging die and the blank thereof specifically includes:

and (4) introducing the three-dimensional models of the isothermal forging die and the blank thereof into the PATRAN to construct a finite element model of the isothermal forging die and the blank thereof.

In some optional embodiments, in the above method for determining isothermal forging process parameters, the finite element model based on the isothermal forging die and the billet thereof simulates an isothermal forging process assuming that:

the isothermal forging die is a rigid body and cannot deform in the isothermal forging process;

the components in the isothermal forging blank are uniform, and the isotropy is free from segregation;

the isothermal forging die and the blank thereof are in an isothermal state, and the heating and the heat dissipation keep dynamic balance.

In some optional embodiments, in the above method for determining isothermal forging process parameters, the setting different process parameters includes:

setting different isothermal forging deformation temperatures;

different isothermal forging deformation rates were set.

For the isothermal forging process parameter determination method disclosed in the above embodiment, it can be understood by those skilled in the art that, in the isothermal forging process, the isothermal forging deformation temperature has an important influence on the uniformity of the deformation of the product, and the allelic deformation rate has an important influence on the uniformity of the distribution of the product structure, and has an important meaning on the weight control of the product.

The isothermal forging process parameters of the titanium alloy parts on the airplane are determined based on the isothermal forging process parameter determination method, the isothermal forging process is simulated based on the constructed isothermal forging die and the finite element model of the blank thereof under the conditions of different isothermal forging deformation temperatures and deformation rates, the relevant characteristics of the obtained isothermal forging parts are analyzed, and the results are found out:

within a certain range, the isothermal forging deformation temperature is increased, so that the temperature rise effect can be inhibited, the deformation is more uniform, the obtained titanium alloy part is better formed, and the quality control of the isothermal forging titanium alloy part is facilitated;

within a certain range, the isothermal forging deformation rate is reduced, so that the structure distribution of the obtained titanium alloy product is more uniform, and the quality control of the isothermal forging titanium alloy product is facilitated.

When the method is applied, the isothermal forging deformation temperature and the isothermal forging deformation rate of the sheet metal part in the isothermal forging process can be determined according to the specific requirements on the quality control of the isothermal forging titanium alloy part and the specific fact that the isothermal forging deformation temperature and the isothermal forging deformation rate have influences on the relevant characteristics of the isothermal forging titanium alloy part through analysis.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

Having thus described the present application in connection with the preferred embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the scope of the present application is not limited to those specific embodiments, and that equivalent modifications or substitutions of related technical features may be made by those skilled in the art without departing from the principle of the present application, and those modifications or substitutions will fall within the scope of the present application.