Dow UCON Quenchant E

UCONTM Quenchant E and E-NN (non-nitrite) are nonflammable polymeric quenchants and are aqueous solutions of a liquid organic polymer and a corrosion inhibitor.

The organic polymer is soluble in water. At temperatures above 74°C (165°F), however, the polymer separates from water as an insoluble phase.

UCON Quenchant E-NN is formulated with a proprietary non-nitrite corrosion inhibitor which is completely compatible with UCON Quenchant E without nitrosamine formation. Analogous quenching performance is obtained with either UCON Quenchant E or E-NN.

When hot metal is quenched in a diluted solution of UCON Quenchant E or E-NN, a film of the liquid organic polymer is deposited on the surface of the hot metal. The rate at which the metal is cooled is governed, in part, by the thickness of the polymer-rich film. The thickness of this film is controlled by the concentration of UCON Quenchant E or E-NN in the quench bath.

The cooling rate is controlled also by adjusting the quench bath temperature and/or the rate of agitation. The main difference between UCON Quenchant E and E-NN and other UCON Quenchants is the choice of the polymer composition, which provides uniform heat transfer in typical oil applications.

UCON Quenchant E and E-NN are suitable for the hardening of: • Large alloy parts from tilt-top, car-bottom, and pit furnaces • Forged parts that are quenched directly from the forge
• Sensitive alloys and shapes heated by induction

• Parts processed from continuous and batch-furnace operations employing gas-fired, neutral, and carburizing-carbonitriding atmospheres requiring oil quenching rates

• FM Approvals has classified UCON Quenchant E and E-NN as “FM Approved” as tested against the latest testing criteria.

• The optimum operating conditions for a specific metal or part may be determined by control of concentration, bath temperature, and/or agitation.

• UCON Quenchant E and E-NN minimize replacement control due to its low deterioration and/or oxidation rate. The major make-up requirement is for water lost by evaporation.

• UCON Quenchant E and E-NN eliminate the smoke, soot and residues common to oil quenchants. Equipment maintenance and plant cleanliness are easier to achieve. • UCON Quenchant E and E-NN are soluble in water and resistant to bacterial growth.

• UCON Quenchant E and E-NN will freeze below 0°C (32°F). They should be thawed to room temperature and mixed before use. The product will not be affected in any way.

UCONTM Quenchant E和E-NN（非亞硝酸鹽）是不可燃的聚合物淬火劑，是由液態有機聚合物和防腐劑組成的水溶液。

這種有機聚合物溶於水。然而，在溫度高於74°C（165°F）時，聚合物會從水中分離出來形成不溶相。

UCON Quenchant E-NN是採用專有的非亞硝酸鹽防腐劑配方製成，完全兼容UCON Quenchant E，不會形成亞硝胺。使用UCON Quenchant E或E-NN都能獲得相似的淬火性能。

當熱金屬浸入UCON Quenchant E或E-NN的稀釋溶液中時，液態有機聚合物會在熱金屬表面形成一層薄膜。金屬的冷卻速率部分取決於這層富含聚合物薄膜的厚度。這層薄膜的厚度可通過控制淬火浴中UCON Quenchant E或E-NN的濃度來調節。

冷卻速率也可以通過調整淬火浴溫度和/或攪拌速率來控制。UCON Quenchant E和E-NN與其他UCON淬火劑的主要區別在於聚合物成分的選擇，它在典型的油應用中提供均勻的熱傳導。

UCON Quenchant E和E-NN適用於硬化以下物品：

• 從傾翻頂、車底和坑式爐中處理的大型合金零件 – 直接從鍛造爐中淬火的鍛造零件

• 通過感應加熱的敏感合金和形狀

• 從連續和批次爐操作中處理的零件，這些操作採用氣體燃燒、中性和滲碳-滲氮氣氛，需要油淬火率

• FM Approvals已根據最新測試標準將UCON Quenchant E和E-NN分類為”FM認證”產品。

• 特定金屬或零件的最佳操作條件可通過控制濃度、浴溫和/或攪拌來確定。

• 由於UCON Quenchant E和E-NN的劣化和/或氧化率低，最大限度地減少了更換控制的需求。主要的補充需求是補充因蒸發損失的水分。

• UCON Quenchant E和E-NN消除了油基淬火劑常見的煙霧、煤煙和殘留物。設備維護和廠房清潔更容易實現。 – UCON Quenchant E和E-NN可溶於水且能抵抗細菌生長。

• UCON Quenchant E和E-NN在0°C（32°F）以下會凍結。應將其解凍至室溫並在使用前混合。產品不會受到任何影響。