溶融鹽 浸漬法에 의한 高炭素 冷間工具鋼의 浸硼處理 = Boronizing of High Carbon Cold Tool Steels by Molten Borax

다국어 초록 (Multilingual Abstract)

The purpose of this paper is to study the effects on the boronized depth, micro-hardness, micro-structure and wear resistance of the high carbon cold tool steels by liquid boronizing.
The molten borax contain K_2B_4O_7·xH_2O_3, H_BO_3, Mg, etc.
The results obtained were as follows;
1) The boronized depth and micro-hardness at the surface layer were increased with increasing boronizing time and temperature.
2) In the temperature range from 800℃ to 900℃, the boride layer was only Fe_2B but 950℃ to 1000℃, boride layer had two layers of FeB and Fe_2B. In the case of STD 11, 900℃ to 1000℃, the boride layer was Fe_2B.
3) The wear resistance of the bornized specimen was increased remarkably about 40~50 times than that of the quench-and-tempered specimens.

목차 (Table of Contents)

• Ⅰ. 緖論
• Ⅱ. 實驗方法
• 1. 시편의 준비
• 2. 침붕처리
• Ⅲ. 實驗結果 및 考察
• 1. 침붕층의 成長速度
• 2. 浸硼機構
• 3. 치붕층의 微小硬度와 顯微鏡 組織
• 4. 침붕처리에 의한 내마모성의 향상
• Ⅳ. 結論