…When the activity of oxygen contained in this cast iron is reduced by using a deoxidizer such as magnesium, graphite precipitates in a spherical shape, eliminating the variation in material strength and creating ductility. This is called spheroidal graphite cast iron. By changing the cooling rate and other heat treatment conditions, the structure can be made into pearlite and graphite, increasing the strength. … *Some of the terminology that refers to "spheroidal graphite cast iron" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…この鋳鉄に含まれる酸素の活量をマグネシウムなどの脱酸材を用いて下げると,黒鉛が球状に析出し,材料強度のばらつきがなくなり,延性が生じてくる。これを球状化黒鉛鋳鉄という。冷却速度などの熱処理条件を変えることにより,組織をパーライトと黒鉛にして強度を上昇させることもできる。… ※「球状化黒鉛鋳鉄」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
Founder of the Maratha Kingdom, a Hindu dynasty c...
In China, there were permanent entertainment halls...
1646‐1714 French economist. Sometimes written as B...
A member of the imperial family in the mid-Edo pe...
...A theory that seeks to clarify the temperature...
...A general term for artificially launched satel...
…Anton Francesco Doni (1513-74) stated that diseg...
Also called Bakubin or Bakukaku. In China, during ...
As known from Josephus' Jewish Antiquities an...
…The most representative of these dolls are still...
〘Noun〙① Under the Ritsuryo system, these were memb...
An employer is liable for compensation for damage...
Forage crops grown as the main feed for livestock...
…After studying in the laboratory of E. Frémy (18...
...Agriculture is diverse, ranging from low-produ...