CN112668156B - A Calculation Method of Storage Life of Non-metallic Parts - Google Patents

Abstract

Translated fromChinese

本发明提供一种非金属件贮存寿命计算方法。其包括：第一步、选定表征非金属件退化的指标，将非金属件硬化层厚度作为非金属件新的退化指标；第二步、试验过程中定期检测非金属件硬化层厚度，包括：使用扫描电子显微对非金属件进行微观组织分子观测，测量硬度测试压痕处的硬化层厚度，按照一定时间间隔测试硬化层厚度，将测试数值按照时间点进行详细记录。第三步、拟合非金属件硬化层厚度‑时间退化模型，评估贮存寿命，包括：根据上述测得的非金属件硬化层厚度‑时间退化数据，得到非金属件硬化层厚度随时间的退化模型。本发明解决以往某些非金属件在进行贮存试验时，主要参数和硬度等指标未出现趋势性变化，不能评估贮存寿命的问题。The invention provides a method for calculating the storage life of non-metal parts. It includes: the first step, select the indicators that characterize the degradation of non-metallic parts, and use the thickness of the hardened layer of non-metallic parts as a new degradation index of non-metallic parts; the second step, regularly detect the thickness of the hardened layer of non-metallic parts during the test, including : Use scanning electron microscopy to observe the microstructure and molecules of non-metallic parts, measure the thickness of the hardened layer at the indentation of the hardness test, test the thickness of the hardened layer according to a certain time interval, and record the test values in detail according to the time point. The third step is to fit the hardened layer thickness-time degradation model of non-metallic parts to evaluate the storage life, including: according to the above-mentioned hardened layer thickness-time degradation data of non-metallic parts, the degradation of the hardened layer thickness of non-metallic parts with time is obtained Model. The invention solves the problem that the storage life of some non-metallic parts cannot be evaluated because there is no trend change in main parameters, hardness and other indexes in storage tests in the past.

Description

Translated fromChinese

一种非金属件贮存寿命计算方法A Calculation Method of Storage Life of Non-metallic Parts

技术领域technical field

本发明涉及非金属件技术领域，特别是一种贮存试验过程中性能没有明显变化情况下的非金属件贮存寿命计算方法。The invention relates to the technical field of non-metallic parts, in particular to a method for calculating the storage life of non-metallic parts under the condition that the performance of the storage test does not change significantly.

背景技术Background technique

某些非金属件在进行贮存试验时，主要参数和硬度等指标未出现趋势性变化，不能给出常规的性能退化模型，无法有效评估贮存寿命，导致试验失败。需要寻找另外一种能够表征非金属件退化的新指标，通过试验过程中定时测量，拟合出新的退化模型，从而对非金属件贮存寿命进行预测。During the storage test of some non-metallic parts, the main parameters and hardness and other indicators did not show a trend change, and the conventional performance degradation model could not be given, and the storage life could not be effectively evaluated, resulting in the failure of the test. It is necessary to find another new index that can characterize the degradation of non-metallic parts. Through regular measurement during the test, a new degradation model is fitted to predict the storage life of non-metallic parts.

发明内容Contents of the invention

本发明目的在于提供一种非金属件贮存寿命计算方法，解决以往某些非金属件在进行贮存试验时，主要参数和硬度等指标未出现趋势性变化，不能评估贮存寿命的问题。The purpose of the present invention is to provide a storage life calculation method for non-metallic parts, which solves the problem that the main parameters and hardness and other indicators of some non-metallic parts do not show trend changes in the storage test in the past, and the storage life cannot be evaluated.

对此，本发明提出一种非金属件贮存寿命计算方法，其包括：第一步、选定表征非金属件退化的指标，将非金属件硬化层厚度作为非金属件新的退化指标；第二步、试验过程中定期检测非金属件硬化层厚度，包括：使用扫描电子显微对非金属件进行微观组织分子观测，测量硬度测试压痕处的硬化层厚度，按照一定时间间隔测试硬化层厚度，一般按照每1000h进行一次测试，将测试数值按照时间点进行详细记录。第三步、拟合非金属件硬化层厚度-时间退化模型，评估贮存寿命，包括：根据上述测得的非金属件硬化层厚度-时间退化数据，得到非金属件硬化层厚度随时间的退化模型。In this regard, the present invention proposes a method for calculating the storage life of non-metallic parts, which includes: the first step, selecting an index that characterizes the degradation of non-metallic parts, and using the thickness of the hardened layer of non-metallic parts as a new degradation index for non-metallic parts; The second step is to regularly detect the thickness of the hardened layer of non-metallic parts during the test, including: using scanning electron microscopy to observe the microstructure and molecules of non-metallic parts, measure the thickness of the hardened layer at the indentation of the hardness test, and test the hardened layer according to a certain time interval Thickness is generally tested every 1000 hours, and the test values are recorded in detail according to time points. The third step is to fit the hardened layer thickness-time degradation model of non-metallic parts to evaluate the storage life, including: according to the above-mentioned hardened layer thickness-time degradation data of non-metallic parts, the degradation of the hardened layer thickness of non-metallic parts with time is obtained Model.

本发明解决以往某些非金属件在进行贮存试验时，主要参数和硬度等指标未出现趋势性变化，不能评估贮存寿命的问题。在不显著增加试验时间和成本的条件下，解决了传统方法不能评估非金属件贮存寿命的问题，具有较高的推广价值。The invention solves the problem that the storage life of some non-metallic parts cannot be evaluated due to the fact that the main parameters, hardness and other indexes do not show trend changes when the storage test is carried out in the past. Under the condition of not significantly increasing the test time and cost, it solves the problem that the traditional method cannot evaluate the storage life of non-metallic parts, and has high promotion value.

具体实施方式Detailed ways

本发明提出一种非金属件贮存寿命计算方法，其包括：The present invention proposes a storage life calculation method for non-metal parts, which includes:

第一步、选定表征非金属件退化的指标The first step is to select the indicators that characterize the degradation of non-metallic parts

用扫描电子显微镜对非金属件进行微观组织分析，观测到非金属件表面出现了硬化现象，硬化层越厚表明非金属件退化越严重，因此将非金属件硬化层厚度作为非金属件新的退化指标。The microstructure of non-metallic parts was analyzed with a scanning electron microscope, and hardening was observed on the surface of non-metallic parts. The thicker the hardened layer, the more serious the degradation of non-metallic parts. Therefore, the thickness of the hardened layer of non-metallic parts is used as the new Degradation indicator.

第二步、试验过程中定期检测非金属件硬化层厚度The second step is to regularly detect the thickness of the hardened layer of non-metallic parts during the test

使用扫描电子显微对非金属件进行微观组织分子观测，主要观察和测量硬度测试压痕处的硬化层厚度，按照一定时间间隔测试硬化层厚度，一般按照每1000h间隔进行一次测试，将测试数值按照时间点进行详细记录。通过对非金属件表面进行微观组织观察与测量，量化非金属试件表面硬化层厚度随时间变化。Use scanning electron microscopy to observe the microstructure and molecules of non-metallic parts, mainly observe and measure the thickness of the hardened layer at the indentation of the hardness test, and test the thickness of the hardened layer at a certain time interval, generally at intervals of 1000h, and test the value Detailed records are made by time point. By observing and measuring the microstructure of the surface of non-metallic parts, the thickness of the hardened layer on the surface of non-metallic test pieces changes with time.

第三步、拟合非金属件硬化层厚度-时间退化模型，评估贮存寿命The third step, fitting the hardened layer thickness-time degradation model of non-metallic parts, and evaluating the storage life

根据上述测得的非金属件硬化层厚度-时间退化数据，通过数学方法按照公式(1)进行拟合，求出待定系数A、B，得到非金属件硬化层厚度随时间的退化模型。According to the measured thickness-time degradation data of the hardened layer of non-metallic parts, the mathematical method is used to fit according to the formula (1), and the undetermined coefficients A and B are obtained to obtain the degradation model of the thickness of the hardened layer of non-metallic parts with time.

H(t)＝A·exp(B·t) (1)H(t)＝A·exp(B·t) (1)

其中：in:

H(t)——非金属件硬化层厚度；H(t)—thickness of hardened layer of non-metallic parts;

t——贮存试验时间；t——storage test time;

A、B——待定系数，一般情况下A＞0，0＜B＜1。A, B—undetermined coefficients, generally A>0, 0<B<1.

根据上述退化模型，给定非金属件硬化层厚度的失效阈值(失效阈值一般为非金属件硬化层初始性能值恶化50％)，可以计算得出非金属件的贮存寿命见式(2)。According to the above degradation model, given the failure threshold of the thickness of the hardened layer of non-metallic parts (the failure threshold is generally 50% deterioration of the initial performance value of the hardened layer of non-metallic parts), the storage life of non-metallic parts can be calculated as shown in formula (2).

本方法所针对的非金属件可以是导热垫，导热垫的材料可以是诸如硅橡胶的橡胶材料。The non-metal part targeted by this method may be a heat conduction pad, and the material of the heat conduction pad may be a rubber material such as silicon rubber.

本发明在不显著增加试验时间和成本的条件下，解决了传统方法不能评估非金属件贮存寿命的问题，具有较高的推广价值。The invention solves the problem that the traditional method cannot evaluate the storage life of non-metal parts without significantly increasing the test time and cost, and has high popularization value.

Claims (3)

Translated fromChinese

1.一种非金属件贮存寿命计算方法，其特征在于，其包括：1. A method for calculating storage life of non-metal parts, characterized in that it comprises:第一步、选定表征非金属件退化的指标，将非金属件硬化层厚度作为非金属件新的退化指标；The first step is to select an index that characterizes the degradation of non-metallic parts, and use the thickness of the hardened layer of non-metallic parts as a new degradation index of non-metallic parts;第二步、试验过程中定期检测非金属件硬化层厚度，包括：The second step is to regularly detect the thickness of the hardened layer of non-metallic parts during the test, including:使用扫描电子显微对非金属件进行微观组织分子观测，测量硬度测试压痕处的硬化层厚度，按照一定时间间隔测试硬化层厚度，将测试数值按照时间点进行详细记录；Use scanning electron microscopy to observe the microstructure and molecules of non-metallic parts, measure the thickness of the hardened layer at the indentation of the hardness test, test the thickness of the hardened layer according to a certain time interval, and record the test values in detail according to the time point;第三步、拟合非金属件硬化层厚度-时间退化模型，评估贮存寿命，包括：The third step is to fit the hardened layer thickness-time degradation model of non-metallic parts and evaluate the storage life, including:根据上述测得的非金属件硬化层厚度-时间退化数据，得到非金属件硬化层厚度随时间的退化模型；According to the non-metallic parts hardened layer thickness-time degradation data measured above, the degradation model of non-metallic parts hardened layer thickness with time is obtained;第三步、拟合非金属件硬化层厚度-时间退化模型，评估贮存寿命，包括：The third step is to fit the hardened layer thickness-time degradation model of non-metallic parts and evaluate the storage life, including:根据上述测得的非金属件硬化层厚度-时间退化数据，通过数学方法按照公式(1)进行拟合，求出待定系数A、B，得到非金属件硬化层厚度随时间的退化模型，According to the non-metallic parts hardened layer thickness-time degradation data measured above, the mathematical method is used to fit according to the formula (1), and the undetermined coefficients A and B are obtained to obtain the degradation model of the non-metallic parts hardened layer thickness with time,H(t)＝A·exp(B·t)(1)H(t)=A·exp(B·t)(1)其中：in:H(t)——非金属件硬化层厚度；H(t)—thickness of hardened layer of non-metallic parts;t——贮存试验时间；t——storage test time;A、B——待定系数，其中A＞0，0＜B＜1；A, B—undetermined coefficient, where A>0, 0<B<1;根据上述退化模型，给定非金属件硬化层厚度的失效阈值，可以计算得出非金属件的贮存寿命见式(2)，According to the above degradation model, given the failure threshold of the hardened layer thickness of non-metallic parts, the storage life of non-metallic parts can be calculated as shown in formula (2),

2.根据权利要求1所述的方法，其特征在于，按照每1000h的时间间隔进行一次硬化层厚度测试。2. The method according to claim 1, characterized in that, a hardened layer thickness test is carried out at a time interval of every 1000h.3.根据权利要求1所述的方法，其特征在于，失效阈值为非金属件硬化层初始性能值恶化50％。3. The method according to claim 1, wherein the failure threshold is 50% deterioration of the initial performance value of the hardened layer of the non-metallic part.