WO2013029351A1 - Dissimilar steel reheat crack susceptibility test method - Google Patents
Dissimilar steel reheat crack susceptibility test method Download PDFInfo
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- WO2013029351A1 WO2013029351A1 PCT/CN2012/071230 CN2012071230W WO2013029351A1 WO 2013029351 A1 WO2013029351 A1 WO 2013029351A1 CN 2012071230 W CN2012071230 W CN 2012071230W WO 2013029351 A1 WO2013029351 A1 WO 2013029351A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
Definitions
- the invention belongs to a test method for weldability of metallic materials. Background
- the technical problem to be solved by the present invention is to provide a test method capable of determining the optimum heat treatment temperature for the dissimilar steel splicing and selecting the optimum welding material.
- a test method for reheat cracking sensitivity of dissimilar steel comprising the following steps:
- Step 1 Prepare the test piece: Prepare the test piece according to GB 4675. 1-84 Weldability test of the bevel type groove weld crack test method. The form and size of the test piece are as shown in Figure 1.
- the test electrode is optional and metal. Material 1 or metal material 2 matching electrode (high matching purlin, low matching purlin), also optional electrode between metal material 1 and metal material 2 (middle matching electrode); (so-called high matching electrode, Medium matching electrodes, low matching electrodes are like this: When dissimilar steel is welded, usually two different Material grade steel grades are welded together. Therefore, when dissimilar steel is welded, if the electrode is selected according to the high grade side material, it can be defined as a high matching electrode. If the electrode is selected according to the low grade ⁇ material, it can be defined as a low matching electrode. An electrode with a material grade between the two materials can be defined as a medium matching electrode. )
- test pieces are subjected to post-weld heat treatment at different temperatures
- Step 3 Evaluation: The heat treatment temperature and the splicing material are used as the heat treatment temperature and the welding material for the welding of the product when the surface crack rate is zero and the crack rate is zero.
- the preheating temperature of the test piece before preheating is determined by the following steps:
- Step 1 Prepare the test piece: Prepare the test piece according to GB 7675. 1-84 Weldability test oblique Y-type groove weld crack test method.
- the test strip can be selected to match metal material 1 or metal material 2.
- Welding rod high matching electrode, low matching electrode, also available in the electrode between the metal material 1 and the metal material 2 (middle matching electrode);
- Step 3 The preheating temperature of the reheat cracking sensitivity test piece of the dissimilar steel is used as the preheating temperature of the reheat cracking sensitivity test of the dissimilar steel with the surface crack rate of zero and the section crack rate of 10%.
- Figure 1 is a schematic view showing the assembly of the test piece
- Figure 2 is a cross-sectional view taken along line AA of Figure 1;
- Fig. 3 is a cross-sectional view taken along line BB of Fig. 1;
- test piece Prepares the test piece. According to GB 4675. 1-84 Weldability Test, the Y-groove weld crack test method is used to prepare the test piece. The form and size of the test piece are shown in Figure 1.
- the test electrode can be selected from metal material 1 or metal material 2 Matching purlins (high-matching purlins, low-matching purlins), and electrodes (metal matching strips) between metal material 1 and metal material 2 are also available.
- test pieces are heat treated at different temperatures
- crack detection and dissection test are carried out. According to the cracking condition of the welded joint, the test results are evaluated to evaluate the reheat crack sensitivity of the dissimilar steel welding, and the most suitable splicing material and the most suitable one are determined. Heat treatment temperature. 3. Evaluation: The heat treatment temperature and the welding material are used as the evaluation criteria and the heat treatment of the welding of the product when the surface crack rate is zero and the crack rate of the section is zero (see the calculation formula of surface crack rate, root crack rate and section crack rate). Temperature and welding materials.
- the method for determining the preheating temperature of the cold crack sensitivity test method for dissimilar steel is as follows:
- Step 1 Prepare the test piece: Prepare the test piece according to the GB 4675. 1-84 splicing test oblique Y-groove splicing crack test method.
- the welding rod used in the test may be matched with metal material 1 or metal material 2.
- Welding electrodes high-matching welding rods, low-matching welding rods
- welding rods middle matching welding rods
- Step 3 evaluation The preheating temperature at which the surface crack rate is zero and the section crack rate is 10% is taken as the preheating temperature of the product before welding.
- the present invention refers to GB 4675. 1-84, and the relevant test procedures and calculation methods can be found in GB 4675. 1-84.
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Abstract
A dissimilar steel reheat crack susceptibility test method, with reference to the Weldability Testing Method of Y-groove Cracking Test (GB4675.1-84), comprising test piece preparation, test process and evaluation; a preferable welding rod is a welding rod matching with a metal material 1 or a metal material 2, or a welding rod with the grade thereof being between the metal material 1 and a metal material 2. The test can easily and reliably test and evaluate the dissimilar steel welding reheat crack susceptibility. Furthermore, the test method can provide a reliable basis for the selection of optimum welding material and heat treatment temperature during the welding of dissimilar steel.
Description
—种异种钢再热裂纹敏感性试验 技术领域 - Re-heat crack sensitivity test of dissimilar steel
本发明属于金属材料可焊性试验方法。 背景 The invention belongs to a test method for weldability of metallic materials. Background
以往,为评定钢种的再热裂纹敏感性试验方法均仅适用于同种钢。但在实 际工程上， 经常出现的是需将两种不同种类的钢焊接在一起。 因此在焊前对 异种钢进行再热裂纹敏感性试验是非常必要的， 通过异种钢再热裂紋敏感性 试验， 可确定异种钢焊接时的最佳热处理温度及选择最佳的悍接材料， 但目 前国内外还没有异种钢再热裂紋敏感性试验方法及评估准则。 发明内容 In the past, the reheat crack susceptibility test method for evaluating steel grades was only applicable to the same steel. However, in practical engineering, it is often the case that two different types of steel need to be welded together. Therefore, it is necessary to test the reheat crack sensitivity of dissimilar steel before welding. Through the reheat crack sensitivity test of dissimilar steel, the optimum heat treatment temperature for dissimilar steel welding and the selection of the best splicing material can be determined, but At present, there is no test method and evaluation criteria for reheat cracking sensitivity of dissimilar steel at home and abroad. Summary of the invention
本发明所要解决的技术问题是提供一种试验方法， 能够确定异种钢悍接 时的最佳热处理温度及选择最佳的焊接材料。 The technical problem to be solved by the present invention is to provide a test method capable of determining the optimum heat treatment temperature for the dissimilar steel splicing and selecting the optimum welding material.
为解决上述技术问题， 本发明的技术方案为： 一种异种钢再热裂纹敏感 性试验方法， 包括以下步骤： In order to solve the above technical problems, the technical solution of the present invention is: A test method for reheat cracking sensitivity of dissimilar steel, comprising the following steps:
步骤 1， 制备试件： 按 GB 4675. 1-84焊接性试验斜 Υ型坡口焊接裂纹试 验方法进行制备试件， 试件的形式与尺寸按图 1所示， 试验所用焊条可选与 金属材料 1或金属材料 2相匹配的焊条（高匹配悍条、低匹配悍条）， 也可选 等级在金属材料 1与金属材料 2之间的焊条 （中匹配焊条）； （所谓高匹配焊 条、 中匹配焊条、 低匹配焊条是这样的： 异种钢焊接时， 通常是将两种不同
材料等级的钢种焊接在一起， 因此， 异种钢焊接时， 如果按高等级侧材料选 择焊条则可定义为高匹配焊条， 如果按低等级恻材料选择焊条则可定义为低 匹配焊条， 如果选择材料等级介于两种材料间的焊条则可定义为中匹配焊 条。） Step 1. Prepare the test piece: Prepare the test piece according to GB 4675. 1-84 Weldability test of the bevel type groove weld crack test method. The form and size of the test piece are as shown in Figure 1. The test electrode is optional and metal. Material 1 or metal material 2 matching electrode (high matching purlin, low matching purlin), also optional electrode between metal material 1 and metal material 2 (middle matching electrode); (so-called high matching electrode, Medium matching electrodes, low matching electrodes are like this: When dissimilar steel is welded, usually two different Material grade steel grades are welded together. Therefore, when dissimilar steel is welded, if the electrode is selected according to the high grade side material, it can be defined as a high matching electrode. If the electrode is selected according to the low grade 恻 material, it can be defined as a low matching electrode. An electrode with a material grade between the two materials can be defined as a medium matching electrode. )
歩骤 2， 进行试验： Step 2, conduct the test:
①按图 1组装试件，即按 GB 4675. 1-84悍接性试验斜 Y型坡口焊接裂纹 试验方法所示的组装图组装试件； 1Assemble the test piece according to Figure 1, ie assemble the test piece according to the assembly drawing shown in GB 4675. 1-84 性 joint test oblique Y-type groove weld crack test method;
②悍接拘束悍缝； 2 拘 拘 拘 悍 ; ;;
③对试件进行焊前预热； 3 pre-weld preheating of the test piece;
④用与金属材料 1或金属材料 2相匹配的悍条 （高匹配悍条、 低匹配悍 条）， 和等级在金属材料 1与金属材料 2之间的焊条（中匹配焊条）分别焊接 试验悍缝； (4) Welding rods (high-matching purlins, low-matching purlins) matched with metal material 1 or metal material 2, and welding rods (middle matching welding rods) of grade between metal material 1 and metal material 2 are respectively welded to test 悍Seam
⑤焊完的试件经 48小时后进行裂紋检测，试验焊缝的焊接必须保证不产 生冷裂纹； 5 After the welded test piece is tested for cracks after 48 hours, the welding of the test weld must ensure that no cold cracks are produced;
⑥试件进行不同温度的焊后热处理； 6 test pieces are subjected to post-weld heat treatment at different temperatures;
⑦热处理试板冷却后， 进行裂纹检测、 解剖试板； 7 After the heat treatment test plate is cooled, the crack detection and anatomy test plate are performed;
步骤 3， 进行评价： 以表面裂纹率为零、 断面裂紋率为零时的热处理温 度和悍接材料作为产品焊接的热处理温度和焊接材料。 Step 3: Evaluation: The heat treatment temperature and the splicing material are used as the heat treatment temperature and the welding material for the welding of the product when the surface crack rate is zero and the crack rate is zero.
作为本发明的进一步优化， 在上述技术方案的步骤 2中对试件进行焊前 预热的预热温度采用以下步骤确定： As a further optimization of the present invention, in the step 2 of the above technical solution, the preheating temperature of the test piece before preheating is determined by the following steps:
步骤 1， 制备试件： 按 GB 4675. 1-84焊接性试验斜 Y型坡口焊接裂纹试 验方法进行制备试件， 试验所用悍条可选与金属材料 1或金属材料 2相匹配
的焊条（高匹配焊条、 低匹配焊条）， 也可选等级在金属材料 1与金属材料 2 之间的焊条 （中匹配焊条）； Step 1. Prepare the test piece: Prepare the test piece according to GB 7675. 1-84 Weldability test oblique Y-type groove weld crack test method. The test strip can be selected to match metal material 1 or metal material 2. Welding rod (high matching electrode, low matching electrode), also available in the electrode between the metal material 1 and the metal material 2 (middle matching electrode);
步骤 2， 进行试验： Step 2, conduct the test:
①按 GB 4675. 1-84焊接性试验斜 Y型坡口焊接裂纹试验方法所示的组装 图组装试件； 1 According to the assembly test piece shown in GB 4675. 1-84 weldability test oblique Y-type groove weld crack test method;
②悍接拘束悍缝； 2 拘 拘 拘 悍 ; ;;
③对试件进行不同温度的焊前预热； 3 pre-weld preheating of the test piece at different temperatures;
④用与金属材料 1或金属材料 2相匹配的悍条 （高匹配悍条、 低匹配悍 条）， 和等级在金属材料 1与金属材料 2之间的焊条（中匹配焊条）分别焊接 试验悍缝； (4) Welding rods (high-matching purlins, low-matching purlins) matched with metal material 1 or metal material 2, and welding rods (middle matching welding rods) of grade between metal material 1 and metal material 2 are respectively welded to test 悍Seam
⑤焊完的试件经 48小时后进行裂紋的检测和解剖； 5 After the welded test piece, the crack was detected and dissected after 48 hours;
步骤 3， 进行评价： 以表面裂纹率为零， 断面裂纹率 10%时的预热温度 +50°C作为异种钢再热裂纹敏感性试件的焊前预热温度。 Step 3, evaluation: The preheating temperature of the reheat cracking sensitivity test piece of the dissimilar steel is used as the preheating temperature of the reheat cracking sensitivity test of the dissimilar steel with the surface crack rate of zero and the section crack rate of 10%.
本发明在试验中选取了各种匹配的焊条分别进行焊接试验， 并分别进行 不同温度的焊后热处理， 因此， 可以找到表面裂纹率为零、 断面裂纹率为零 时的最佳焊接材料和热处理温度。 本发明与现有技术相比具有可对异种钢焊 接的再热裂紋敏感性进行方便、 可靠试验及评估的优点。 同时， 通过该试验 方法， 可对异种钢焊接时选用最佳的焊材和热处理温度提供了可靠的依据。 附图说明 In the test, various matching welding rods are selected for the welding test, and the post-weld heat treatments of different temperatures are respectively performed, so that the optimum welding material and heat treatment when the surface crack rate is zero and the section crack rate is zero can be found. temperature. Compared with the prior art, the present invention has the advantages of convenient, reliable test and evaluation of the reheat crack sensitivity of dissimilar steel welding. At the same time, this test method can provide a reliable basis for selecting the best welding consumables and heat treatment temperature for dissimilar steel welding. DRAWINGS
图 1是试件的组装示意图； Figure 1 is a schematic view showing the assembly of the test piece;
图 2是图 1的 A-A方向剖视图；
图 3是图 1的 B-B方向剖视图。 具体实 H^r式 Figure 2 is a cross-sectional view taken along line AA of Figure 1; Fig. 3 is a cross-sectional view taken along line BB of Fig. 1; Concrete H^r
1. 制备试件。 按 GB 4675. 1-84焊接性试验斜 Y型坡口焊接裂纹试验方 法进行制备试件， 试件的形式与尺寸按图 1所示， 试验所用焊条可选与金属 材料 1或金属材料 2相匹配的悍条（高匹配悍条、低匹配悍条）， 也可选等级 在金属材料 1与金属材料 2之间的焊条 （中匹配焊条）。 1. Prepare the test piece. According to GB 4675. 1-84 Weldability Test, the Y-groove weld crack test method is used to prepare the test piece. The form and size of the test piece are shown in Figure 1. The test electrode can be selected from metal material 1 or metal material 2 Matching purlins (high-matching purlins, low-matching purlins), and electrodes (metal matching strips) between metal material 1 and metal material 2 are also available.
2. 进行试验 2. Conduct the test
①按图 1组装试件，即按 GB 4675. 1-84焊接性试验斜 Y型坡口焊接裂纹 试验方法所示的组装图组装试件； 1Assemble the test piece according to Figure 1 , that is, assemble the test piece according to the assembly drawing shown in GB 4675. 1-84 weldability test oblique Y-type groove weld crack test method;
②焊接拘束焊缝； 2 welding constrained welds;
③根据异种钢冷裂纹敏感性试验方法确定的预热温度 +50°C进行悍前预 热； （该方法在下面介绍） 3 Preheating according to the preheating temperature +50 °C determined by the cold crack sensitivity test method for dissimilar steel; (This method is introduced below)
④用与金属材料 1或金属材料 2相匹配的悍条 （高匹配悍条、 低匹配悍 条）， 和等级在金属材料 1与金属材料 2之间的焊条（中匹配焊条）分别焊接 试验悍缝； (4) Welding rods (high-matching purlins, low-matching purlins) matched with metal material 1 or metal material 2, and welding rods (middle matching welding rods) of grade between metal material 1 and metal material 2 are respectively welded to test 悍Seam
⑤焊完的试件经 48小时后进行裂紋检测，试验焊缝的焊接必须保证不产 生冷裂纹； 5 After the welded test piece is tested for cracks after 48 hours, the welding of the test weld must ensure that no cold cracks are produced;
⑥试件进行不同温度的热处理； 6 test pieces are heat treated at different temperatures;
⑦热处理试板冷却后， 进行裂纹检测、 解剖试板， 根据焊接接头开裂情 况， 对试验结果进行评价， 评估异种钢焊接时的再热裂纹敏感性， 确定最合 适的悍接材料和最合适的热处理温度。
3. 进行评估： 以表面裂纹率为零、 断面裂纹率为零（表面裂纹率、根部 裂纹率和断面裂纹率的计算公式见下） 时的热处理温度和焊接材料作为评估 准则和产品焊接的热处理温度和焊接材料。 7 After the heat treatment test plate is cooled, crack detection and dissection test are carried out. According to the cracking condition of the welded joint, the test results are evaluated to evaluate the reheat crack sensitivity of the dissimilar steel welding, and the most suitable splicing material and the most suitable one are determined. Heat treatment temperature. 3. Evaluation: The heat treatment temperature and the welding material are used as the evaluation criteria and the heat treatment of the welding of the product when the surface crack rate is zero and the crack rate of the section is zero (see the calculation formula of surface crack rate, root crack rate and section crack rate). Temperature and welding materials.
Cf - - ~~ -—— X辦 ½C f - - ~~ -—— X do 1⁄2
Cs =— χ !.00 ¾ 式中： Cf一一表面裂纹率， ％; C s =— χ !.00 3⁄4 where: Cf—one surface crack rate, %;
Cs ---断面裂纹率， ％; Cs --- section crack rate, %;
Cr一一根部裂纹率， ％; Crack rate of one part of Cr, %;
L --一试验焊缝长度， 誦； L -- a test weld length, 诵;
H ---试验焊缝的最小厚度， mm ; H --- minimum thickness of the test weld, mm;
He ---断面裂纹的高度， mm ; He --- the height of the section crack, mm ;
∑Lf -—表面裂紋长度之和， mm ; ∑Lf - the sum of surface crack lengths, mm;
∑Lr -一根部裂纹长度之和， mm ; ∑Lr - the sum of the crack lengths of one part, mm;
异种钢冷裂纹敏感性试验方法确定预热温度的方法如下： The method for determining the preheating temperature of the cold crack sensitivity test method for dissimilar steel is as follows:
步骤 1， 制备试件： 按 GB 4675. 1-84悍接性试验斜 Y型坡口悍接裂纹试 验方法进行制备试件， 试验所用焊条可选与金属材料 1或金属材料 2相匹配 的悍条（高匹配焊条、 低匹配悍条）， 也可选等级在金属材料 1与金属材料 2 之间的焊条 （中匹配焊条）； Step 1. Prepare the test piece: Prepare the test piece according to the GB 4675. 1-84 splicing test oblique Y-groove splicing crack test method. The welding rod used in the test may be matched with metal material 1 or metal material 2. Strip (high matching electrode, low matching string), also optional electrode between metal material 1 and metal material 2 (middle matching electrode);
步骤 2， 进行试验： Step 2, conduct the test:
①按 GB 4675. 1-84焊接性试验斜 Y型坡口焊接裂紋试验方法所示的组装
图组装试件； 1According to the assembly shown in GB 4675. 1-84 weldability test oblique Y-bevel weld crack test method Figure assembly test piece;
②焊接拘束焊缝； 2 welding constrained welds;
③对试件进行不同温度的焊前预热； 3 pre-weld preheating of the test piece at different temperatures;
④用与金属材料 1或金属材料 2相匹配的焊条 （高匹配焊条、 低匹配焊 条）， 和等级在金属材料 1与金属材料 2之间的焊条（中匹配焊条）分别焊接 试验悍缝； 4 Welding electrodes (high-matching welding rods, low-matching welding rods) matched with metal material 1 or metal material 2, and welding rods (middle matching welding rods) of grade between metal material 1 and metal material 2 are respectively welded to test quilting;
⑤焊完的试件经 48小时后进行裂紋的检测和解剖； 5 After the welded test piece, the crack was detected and dissected after 48 hours;
步骤 3， 进行评价： 以表面裂纹率为零， 断面裂纹率 10%时的预热温度 作为产品的焊前预热温度。 Step 3, evaluation: The preheating temperature at which the surface crack rate is zero and the section crack rate is 10% is taken as the preheating temperature of the product before welding.
4. 本发明参考了 GB 4675. 1-84， 相关的试验步骤和计算方法可参见 GB 4675. 1—84。
4. The present invention refers to GB 4675. 1-84, and the relevant test procedures and calculation methods can be found in GB 4675. 1-84.
Claims
1. 一种异种钢再热裂纹敏感性试验方法，其特征在于，包括以下步骤: 步骤 1， 制备试件： 按 GB 4675. 1-84焊接性试验斜 Y型坡口焊接裂纹试 验方法进行制备试件， 试验所用悍条可选与金属材料 1或金属材料 2相匹配 的焊条（高匹配焊条、 低匹配焊条）， 也可选等级在金属材料 1与金属材料 2 之间的焊条 （中匹配焊条）； A test method for reheat cracking sensitivity of dissimilar steel, comprising the steps of: Step 1: preparing a test piece: according to GB 4675. 1-84 weldability test oblique Y-type groove weld crack test method for preparation For the test piece, the test strip used can be selected from the metal material 1 or the metal material 2 (high matching electrode, low matching electrode), or the electrode between the metal material 1 and the metal material 2 (middle matching) Welding rod)
步骤 2， 进行试验： Step 2, conduct the test:
①按 GB 4675. 1-84焊接性试验斜 Y型坡口焊接裂纹试验方法所示的组装 图组装试件； 1 According to the assembly test piece shown in GB 4675. 1-84 weldability test oblique Y-type groove weld crack test method;
②焊接拘束焊缝； 2 welding constrained welds;
③对试件进行焊前预热； 3 pre-weld preheating of the test piece;
④用与金属材料 1或金属材料 2相匹配的焊条 （高匹配焊条、 低匹配焊 条）， 和等级在金属材料 1与金属材料 2之间的焊条（中匹配焊条）分别焊接 试验焊缝； 4 welding the test welds with welding rods (high matching welding rods, low matching welding rods) matched with metal material 1 or metal material 2, and welding rods (middle matching welding rods) of grade between metal material 1 and metal material 2;
⑤悍完的试件经 48小时后进行无损检测，试验焊缝的悍接必须保证不产 生冷裂纹； The finished specimens shall be subjected to non-destructive testing after 48 hours, and the joints of the test welds shall be such that no cold cracks are produced;
⑥试件进行不同温度的悍后热处理； 6 specimens are subjected to post-mortem heat treatment at different temperatures;
⑦热处理试板冷却后， 进行裂纹检测、 解剖试件； 7 After the heat treatment test plate is cooled, crack detection and dissection test pieces are performed;
步骤 3， 进行评价： 以表面裂纹率为零、 断面裂纹率为零时的热处理温 度和焊接材料作为产品焊接的热处理温度和焊接材料。 Step 3: Evaluation: The heat treatment temperature and the welding material as the heat treatment temperature and the welding material of the product are welded at a surface crack rate of zero and a section crack rate of zero.
2.根据权利要求 1所述的一种异种钢再热裂纹敏感性试验方法， 其特征 在于， 所述步骤 2中对试件进行焊前预热的预热温度采用以下步骤确定： 步骤 1， 制备试件： 按 GB 4675. 1-84焊接性试验斜 Y型坡口悍接裂纹试 验方法进行制备试件， 试验所用焊条可选与金属材料 1或金属材料 2相匹配 的焊条（高匹配焊条、 低匹配焊条）， 也可选等级在金属材料 1与金属材料 2 之间的焊条 （中匹配焊条）； The method for testing the reheating crack sensitivity of a dissimilar steel according to claim 1, wherein the preheating temperature of the preheating of the test piece in the step 2 is determined by the following steps: Step 1. Preparation of test pieces: According to GB 4675. 1-84 weldability test oblique Y-type groove joint crack test The test method is used to prepare the test piece, and the electrode used for the test may be an electrode (metal matching material 1 or metal material 2) matching electrode (high matching electrode, low matching electrode), or electrode with metal grade 1 and metal material 2 may be selected. (medium matching electrode);
歩骤 2， 进行试验： Step 2, conduct the test:
①按 GB 4675. 1-84焊接性试验斜 Y型坡口焊接裂紋试验方法所示的组装 图组装试件； 1 According to the assembly test piece shown in GB 4675. 1-84 weldability test oblique Y-type groove weld crack test method;
②焊接拘束焊缝； 2 welding constrained welds;
③对试件进行不同温度的悍前预热； 3 pre-heating of the test piece at different temperatures;
④用与金属材料 1或金属材料 2相匹配的焊条 （高匹配焊条、 低匹配焊 条）， 和等级在金属材料 1与金属材料 2之间的焊条（中匹配焊条）分别悍接 试验焊缝； 4 using a welding rod (high matching welding rod, low matching welding rod) matched with metal material 1 or metal material 2, and a welding rod (middle matching welding rod) of grade between metal material 1 and metal material 2 respectively splicing the test welding seam;
⑤悍完的试件经 48小时后进行裂纹的检测和解剖； 5 After the test piece was tested, the crack was detected and dissected after 48 hours;
步骤 3， 进行评价： 以表面裂纹率为零， 断面裂纹率 10%时的预热温度 +50 作为异种钢再热裂纹敏感性试件的悍前预热温度。 Step 3, evaluation: Preheating temperature +50 at a surface crack rate of 10% and a cross-section crack rate of 10% as the preheating temperature of the preheating of the dissimilar steel reheat cracking test piece.
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| PL403110A PL227293B1 (en) | 2011-08-31 | 2012-02-16 | Method for testing of the susceptibility of different types of steel to crack during the reheating |
| ZA2013/01307A ZA201301307B (en) | 2011-08-31 | 2013-02-20 | Method for testing reheating crack sensitivity of dissimilar steel |
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| CN201110253869.3 | 2011-08-31 | ||
| CN2011102538693A CN102371436A (en) | 2011-08-31 | 2011-08-31 | Reheating crack sensitivity test method for dissimilar steels |
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| CN103921009A (en) * | 2013-01-16 | 2014-07-16 | 宝山钢铁股份有限公司 | Straight welded joint crack sensitivity evaluation method and multivariant restraining plate for evaluating |
| CN103586593B (en) * | 2013-10-30 | 2015-10-07 | 河海大学常州校区 | A kind of different steel weld cold cracking sensitivity Forecasting Methodology |
| CN104400244B (en) * | 2014-09-26 | 2016-02-17 | 上海交通大学 | Thin-wall titanium alloy spinning part laser weld fire check sensitivity tests method |
| CN104625456B (en) * | 2015-01-09 | 2017-11-28 | 江苏省沙钢钢铁研究院有限公司 | Manufacturing method of restrained weld joint for oblique Y-shaped groove welding crack test |
| CN104713760B (en) * | 2015-02-16 | 2018-01-19 | 天津大学 | Transversal crack sensitivity assessment is welded with horizontal groove test specimen and evaluation method |
| CN104827170B (en) * | 2015-05-14 | 2017-01-18 | 东方电气集团东方锅炉股份有限公司 | Test weld gap clearance ensuring method in oblique Y-groove weld cracking test method |
| CN104880364B (en) * | 2015-06-20 | 2017-05-31 | 湖南科技大学 | One kind welding constraint stress adjustable test device |
| CN105269170A (en) * | 2015-07-23 | 2016-01-27 | 东方电气集团东方锅炉股份有限公司 | Assessment method for hot cracking sensitivity of small-diameter pipe |
| CN105643135B (en) * | 2016-03-31 | 2016-12-07 | 广东大鹏液化天然气有限公司 | A kind of oil and gas pipes restrains analog and method of testing thereof |
| CN112276409A (en) * | 2019-07-24 | 2021-01-29 | 九江海天设备制造有限公司 | Method for detecting weldability of low-alloy high-strength steel |
| CN112505286B (en) * | 2019-09-16 | 2023-08-11 | 中国科学院上海光学精密机械研究所 | Detection device and method for zinc-induced liquid metal crack formation condition |
| CN111761250A (en) * | 2020-06-30 | 2020-10-13 | 南通振华重型装备制造有限公司 | Welding test method for preventing 690-grade high-strength steel welding cracks |
| CN112067781B (en) * | 2020-08-21 | 2023-09-19 | 平顶山平煤机煤矿机械装备有限公司 | Test method for sensitivity of welding cold cracks of hydraulic support structural part |
| CN114166630B (en) * | 2021-11-30 | 2023-09-12 | 天津大学 | Transverse crack sensitivity test device and method based on composite restraint |
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| CN102371436A (en) | 2012-03-14 |
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