Estimation method of bonding state in composite casting with different material insertions

不同材料插入复合铸件结合状态的估计方法

• 批准号: 13650794
• 负责人: NOGUCHI Toru
• 金额: $ 1.92万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650794/
• 关键词: Casting; Cast-in bonding; Composite casting; Bonding; Cast iron; Solidification simulation; Estimation of bonding; Size effect; 拡散; 溶融; 超硬合金

Composite casting is a convenient way of making high performance castings by bonding different insert materials utilizing productivity of casting process. This study is to find a method to predict the bonding state, bond or no bond, from the geometrical and temperature data of the insert and the casting. The study consists of three steps ;(1)insertion experiment to bond mild steel disks or rings to the end face of a cylindrical cast iron castings, and the solidification analysis of the melt,(2)simulations of pipe and bar insertions with various dimension combinations, and(3)total examination of the bonding state with geometrical data from the simulations and the experiments. The results are as follows :(1) Necessary thermal condition for metallurgical bonding was established, wet contact of liquid melt with the insert longer than 100 s both in buried insertion and end face bonding.(2) Necessary volume ratio, VR, to achieve the condition is 8-10 for pipe and bar insertions and about 30 … More in end face bonding.(3) However, the critical VR depends on the thickness of the inserts, the similarity with VR is not vaild.(4) Bond or no bond can be expressed by the areas in a t (insert thickness) - 1/VR diagram, the approximate border lines were indicated.(5) The diagram are divided into three zones, (I)small insert zone where bonding state is determined by the volume of the casting, (II)intermediate zone where necessary volume ratio is almost constant and the minimum, and (III) large insert zone where the bonding is determined by the insert thickness.(6) Unified judging diagram for pipe and bar insertions and end face bonding may be possible by some conversion parameters.Another results of the stydy are ;(7) data of appropriate range of material constants and boundary parameters for simulation were obtained,(8) mechanism and the thermal conditions of melting of steel inserts in cast iron melt was clarified, and(9) mechanism of bonding WC-Co insert with cast iron was also revealed. Less

复合铸造是一种利用铸造生产率，通过粘结不同的镶块材料来制造高性能铸件的简便方法。本研究的目的是从镶块和铸件的几何参数和温度数据中，找到一种预测镶块结合状态的方法。研究包括三个步骤：（1）插入实验，以连接低碳钢盘或环到一个圆柱形铸铁铸件的端面，和熔体的凝固分析，（2）模拟管和杆插入与各种尺寸组合，和（3）总检查的结合状态与模拟和实验的几何数据。研究结果如下：（1）建立了实现冶金结合所需的热条件，无论是埋嵌还是端面结合，液态熔体与镶块的湿接触时间均大于100 s。(2)必要的体积比，VR，以实现该条件是8-10的管和杆插入和约30 ...更多信息 在端面粘合中。(3)然而，临界VR取决于插入物的厚度，与VR的相似性是不成立的。(4)粘结或无粘结可用t（衬垫厚度）- 1/VR图中的面积表示，并指出了近似边界线。(5)该图分为三个区域，（I）小插入物区域，其中结合状态由铸件的体积决定，（II）中间区域，其中所需的体积比几乎恒定且最小，以及（III）大插入物区域，其中结合由插入物厚度决定。(6)通过一定的转换参数，可以得到管、杆插入和端面粘接的统一判别图。（7）获得了适合模拟的材料常数和边界参数范围。（8）阐明了钢镶块在铸铁熔体中熔化的机理和热条件，（9）揭示了WC-Co镶片与铸铁的结合机理。少

项目成果

堀川紀孝, 王立 松, 野口 徹, 他: "鋳鉄溶湯による軟鋼の鋳ぐるみ接合における心材の溶融"日本機械学会論文集. 67(667)C. 2673-2678 (2001)

Noritaka Horikawa、Royal Matsu、Toru Noguchi 等人：“使用熔融铸铁熔化低碳钢铸造接头中的芯材”，日本机械工程师学会汇刊 67(667)C (2001)。 ）

HORIKAWA Noritaka: "Insertion Bonding of Mild Steel to an End Surface of Ductile Iron Castings"Proc. of the 7^<th> Asian Foundry Congress, Taipei, Taiwann. 225-234 (2001)

HORIKAWA Noritaka：“低碳钢与球墨铸铁铸件端面的插入结合”Proc。

N. Horikawa, T. Noguchi: "Melting of Steel Inserts by Cast Iron Melt in Cast-in Insertion Bonding"Proceedings of the 65th World Foundry Congress, Gyongju, Korea. 131-138 (2002)

N. Horikawa、T. Noguchi：“铸铁熔体在铸件嵌件粘结中熔化钢嵌件”第 65 届世界铸造大会论文集，韩国庆州。

堀川紀孝, 加野潤二, 野口 徹他: "鋳ぐるみ端面接合の数値解析における計算条件に関する考察"鋳造工学. 75. 95-101 (2003)

Noritaka Horikawa、Junji Kano、Toru Noguchi 等：“铸造端面接头数值分析中计算条件的考虑”铸造工程 75. 95-101 (2003)。

堀川 紀孝: "鋳鉄溶湯による軟鋼の鋳ぐるみ接合における心材の溶融"機械学会論文集. 67・660C. 2673-2678 (2001)

Noritaka Horikawa：“使用熔融铸铁熔化低碳钢铸造接头中的芯材”，日本机械工程师学会会刊 67・660C (2001)。