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Oil well drill bits require alloys that are wear resistant, fatigue resistant and corrosion resistant.

The Delamin QPQ® process together with range of the Delamin Nitriding products help to achieve this.

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DELAMIN SALT BATH NITRIDING – [Delamin QPQ® PROCESS]

Delamin Ltd is pleased to be able to provide a complete line of products to meet all of your commercial needs for the Salt Bath Ferritic Nitrocarburizing of all ferrous metals and alloys. Used in a broad range of industrial applications, this nitriding process has proven itself to be a reliable low-cost alternative for improving the wear resistance and corrosion resistance of components and tooling.

By diffusing both nitrogen and carbon into the surface of the material being treated, salt bath nitriding attains a low temperature surface hardening process with little or no distortion or dimensional change, altering the surface chemistry and creating a uniform, very thin (generally less the 25 microns) but very hard (exceeding an equivalent Rc70 for most highly-alloyed materials) nitride layer on the material. The layer imparts significant surface wear resistance as well as enhancing material fatigue resistance. When coupled with a subsequent oxidation/quench bath as part the Delamin QPQ® process, there is also a significant increase in material corrosion resistance as well as enhanced surface lubricity and a cosmetically attractive black oxide finish.

All Delamin nitriding products are manufactured to meet the requirements of SAE AMS 2753C [Liquid Salt-Bath Ferritic Nitrocarburizing].

Additional information or discussion regarding the Delamin QPQ® process and its applications is available upon request.

 

DELAMIN RANGE OF PRODUCTS FOR SALT BATH NITRIDING

DEL–GEN™ PREMIUM
DEL-NITE™
DEL–QUENCH™

DEL-GEN™ PREMIUM [Nitriding Bath Regenerator Compound]

DEL-GEN™ PREMIUM is a proprietry melamine 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™ [Nitriding Base Salt]

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 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.

 

DEL-QUENCH™ [Oxidizing & Neutralizing Salts]

Del-Quench™ Standard is a proprietary salt consisting of alkaline nitrate and hydroxide compounds. It is used as a post-nitride 'quench bath'. This neutralises any potential cyanide compounds which may have formed as a result of nitriding bath reactions reacting with any nitriding salt residues adhering to the nitrided components or fixtures. A second and perhaps more important function from a part property and performance perspective is the formation on the part surface of a uniform Fe3O4 black oxide layer which greatly enhances the part corrosion resistance, lubricity and cosmetic appearance.

The oxidizing Quench bath is integral to the Delamin QPQ® Nitriding process.

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 where excessive nitrate salt drag-out during normal operation tends to rapidly deplete the nitrate level below the recommended operating level of 5 % – 15 %.

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 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.

 

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