Carburizing is a heat treatment process where iron or steel absorbs carbon at high temperatures to enhance hardness, strength, and wear resistance. This process is widely used in automotive, aerospace, medical, firearms, and manufacturing industries to improve the longevity and performance of metal components. However, in applications where selective hardening is necessary, a carburizing stop-off paint is applied to designated areas to prevent carbon penetration.

Del-Quench™ Standard is a proprietary salt consisting of alkaline nitrate and hydroxide compounds. It is used as a post-nitride ‘quench bath.’ This neutralizes any potential toxic compounds which may have formed as a result of nitriding bath reactions reacting with any nitriding salt residues adhering to the components or fixtures. A second and perhaps more important function from a property and performance perspective is the formation of a uniform Fe3O4 black oxide layer on the part surface which greatly enhances the corrosion resistance, lubricity and cosmetic appearance.
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The oxidizing Quench bath is integral to the Delamin QPQ® Nitriding process.
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Del-Quench™ HN [Hign Nitrate Replenishment Salt] is a higher nitrate formulation of Del-Quench™ Standard quench salt. This is used as a supplemental addition to center the excessive salt drag-out during normal operation which tends to rapidly deplete the nitrate level below the recommended operating level of 5 % – 15 %.
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Delamin® ST [Oxidizing Bath Starter Salt] is a proprietary quench salt used only when starting a new quench bath. It contains carbonate compounds in addition to the alkaline nitrate and hydroxide compounds contained in the Del-Quench™ Standard composition. It is used to prevent the cosmetic problems (red surface) associated with new quench bath start-ups.

DEL-GEN™ PREMIUM is a proprietary melamine-based polymer used as a routine supplemental addition to an operating nitriding salt-bath to maintain the bath nitriding potential and operating efficiency. This is accomplished by the ‘regenerator’ reacting chemically with and converting non-desirable carbonates (sludge) formed during normal bath chemical reactions back to cyanates. 

DEL-NITE™ is a non-cyanide proprietary dry salt blend of alkaline and carbonate compounds formulated to meet or exceed the requirements of SAE AMS-2753C (Liquid Salt-Bath Ferritic Nitrocarburizing). It is the primary or ‘base salt’ for the ferritic nitrocarburizing process which is used to significantly enhance the wear resistance, corrosion resistance and anti-fatigue properties of all ferrous materials and alloys, including cast irons and stainless steels. The process is used extensively for both automotive and appliance industry components as well as for many tooling applications in the fields of oil exploration and plastic moulding.