Heat Treatment Salt

We offer heat treatment salt to our esteemed clients. These heat treatment salt are available in various forms to meet the requirement of heat treatment applications of varied industries like automotive, fasteners and medical equipment. Our range is known for precise pH value, accurate composition and effectiveness.

 

Specifications:

Chemicals	Specification
Tempering Salt	T.S.-150 T.S.-220 T.S.-540
Neutral Salt	N.S.-660 N.S.-970
Carburising Salt	Case-carb (used with sodium cyanide)
Economizer	Graphite Flakes
Gas Carburising Fluid	Gaseous state case Hardening (Drip-carb)

LCN-870 :- Salt in used for liquid carburizing. It producers a file hard wear resistance surface on ferrous parts. When steel is heated above Ac1, the surface of the steel absorbs both carbon and nitrogen from the molten bath. Salt gives cases less in carbon and more in nitrogen than in case of liquid carburizing. Operating Temperature - 760^oC – 870^oC. Aging Time - 4 to 8 Hours at 700^oC (During Aging No Economizer is used.)

ULTRA CASE CARB-1-Liquid carburizing salt for case hardening of steel /Iron by holding it at AC1, in molten salt of ultra case carb-1 and cyanide bath so that carbon will diffuse from the bath into the metal give a case higher in carbon. The salt used by mixing it with sodium cyanide. 2 parts( ULTRA CASE CARB – 1) and 1 part of ( sodium cyanide) By weight.

Operating Temperature - 850oC – 950oC

Strring Required - Complete Mixing of Salt

Time Required - 30 Minutes to 8 hours

ULTRA CASE CARB – 2- Liquid Carburizing salt is preferred where work is directly quenched in Tempering salt ( T.S. – 150 ) after carburizing.

Operating Temperature - 800oC – 950oC

PRODUCT	USED FOR	Deg oC WORKING RANGE	APPLICATION
1.Case-carb ultra Carburizing	Case hardening of low carbon steel	860oC-950oC	Pack carburizing Compound for case hardening in powder or granule from.
Economizer (Graphite-Flakes)	Prevent fuming, heat loss of the hardening salt bath by spraying a layer on top of the salt bath when salt bath comes up to working temperature.	As Desired	Economizer to suppress fuming and increase pot life of salt bath. It also prevent heat loose.

LNS–590– Liquid Nitriding is unique in its ability to produce a satisfactorily nitrided case on carbon steel. Liquid nitriding improves wear resistance and antigalling properties, increased fatigue resistance and less in distortion. It is preferably used on Thrust Washer, Shaft, Seat Bracket in 1010, 1020 steel.

 

Mixing of salt-- use 1 part LNS-590 and 2 part of sodium Cyanide.

 

Operating Temperature - 570^oC – 590^oC

 

Aging of Bath - at 540⁰C – 590^oC for 12 hours

 

Operating Time - 30 Minutes to 4 Hour

Gas Carburizing Drip – GCD is a gas – carburizing – liquid for carburizing the steels in Gaseous State. The GCD is proprietary compounds of hydrocarbons and oxygenated hydrocarbons. GCD normally fed in droplet form to a target plate in the furnace where it volatilizes almost instantaneously. The vapor dissociates thermally to provide a carburizing atmosphere containing, carbon monoxide, carbon dioxide and methane and water vapor.

 

Forced fan circulation serves to distribute the atmosphere evenly throughout the furnace and to promote temperature uniformity. The fan re-circulates the "spent" gas which acts as a carrier gas and dilutes the rich gas to present excessive sooting.

Operating Temperature - 845^oC to 925^oC

Operating Time - 2 Hour to 36 hour

 

Depending on the case depth

N.S. – 660 : N.S. – 660 is used for hardening various tool steels and preferably carburized steel and for preheating high speed steels and hot working steels before treatment in Neutral Salt-970.

 

Working Range:-660^oC – 900^oC

(can be raised to 1000^oC if covered with Economizer)

 

2 N.S. – 720 : N.S. – 720 is regenerator salts are used for treatment of carbon and alloy steel or off carburized parts which have been selectively machined to remove the case from certain parts before hardening, N.S. – 720 in readily water soluble salt. The Neutral salt – 720 are also used for austenitizing work prior to hardening by quenching into tempering salt – 150 for (martempering or austempering) or in Quenching Oil.

Working Range:- 720^oC – 900^oC

( can be raised to 1000⁰C if covered with Economizer)

 

3 N.S. – 970 : N.S. – 970 is used for hardening of high speed steels by heating to the austenitizing temperature of the steel and hot working steels to the appropriate hardening temperature. Neutral salt work as Austenitizing salt for tool steels in Heat – treatment of steels.

 

Working Range :- 970^oC -1350^oC

 

4 N.S – 830 – Neutral Salt 830 is used for Hardening Chromium rust resistance steel which include steels used for cutlery. Neutral salt 830 is used for hardening tool steels containing 2% carbon, 12% chromium and many others Hot working steels.

 

Working range :– 830^oC – 1100^oC

 

N.S. – 1100 – Neutral salt 1100 is a decarburizing free salt especially when tools after hardening are not required to be ground on each side of the cutting edges of steel tools.

 

Working Range:- 1000^oC – 1300^oC

Quenching Salts

Tempering Salts

 

Tempering /Quenching Salt – 540 : Tempering salt is chloride based quenching salt for quenching of tools in high speed steel, or Austenitized steel from neutral salt – 970 bath. It working range in 540^oC – 700^oC.

 

Tempering /Quenching Salt -495 : Tempering Salt is chloride based Quenching Salt for quenching of High speed steels and T.S. 495 is also used for hardening/Tempering in temperature range of 495⁰C - 700⁰C.

 

QSR (Quenching Salt Reducer) : This is a specially formulated reducing or degassing salt used for lowering the temperature of quenching salt / tempering salt which are have raised due to quenching bath. This upsets the eutectic composition and increases melting point thereby causing freezing of the top layer of the molten salt.

 

This imbalance can be corrected by periodic addition of Quenching Salt Reducer, to restore quench bath fluidity.

 

 

 

Neutral Salt – 650 :- N.S. – 650 is used for annealing low, medium and high carbon steel. It is used in metla pots in electrode furnace.

 

N.S. – 650 is used for gray Iron. Annealing of gray iron consists of heating it to a temperature up to 720^oC / high enough to soften it, thus improving its machinability. As the temperature increases above 590^oC. The rate at which iron-carbide decomposes to Ferrite – Graphite increases markedly, reaching a maximum at lower transformation temperature (760^oC for unalloyed or low alloy iron)

 

Working range – 680oc – 760oc

Erritizing anneal - 704oc – 760oc for 1 hour

Medium ("full") - 787oc - 898oc for 1 hour

Grahitizing anneal - 898oc – 954oc 15m –1 hour

(Martempering & austempering)

1. T. S. -150 :- t. S. – 150 it is marquenching liquid tempering salt. The salt is used for quenching of steel from austenitizing temperature into the molten salt of t. S. -150 maintained at a temperature slightly above the martensite range. T. S. -150 are used for en 61, dies, tabs, punches, collets etc.

 

Working range :- 150^oc – 550^oc.

1. T. S. – 220 – it is a tempering salt for alloy steels and high carbon steels. It is also used for austempering and martempering of steel. It is also used for austempering are martempering of steel. The salts are nitrate / nitrate based and used on pliers, chisel, screw-driver, stamps, spanner, hammer, milling cutters, knives, tongs etc.

 

Working range :- 220^oc – 550^oc.

 

1. T. S. – 330 – if is a tempering / quenching salt used for a treatment of aluminum alloys at 480^oc – 535^oc before quenching into water or for annealing the aluminum alloys at 380^oc – 400^oc after cold working and before further deformation. T. S. – 330 in a mixture of nitrate/nitrite salts. T. S. 330 given a good finish of the aluminium metal during treatment.

 

working range : - 330^oc – 535^oc

 

 

Tempering salt

Product	Used for	deg o c working range	application
T. S. 150	5210/en, dies, taps, puncher, collects.	160oc-550o	tempering salt suitable for martempering & austempering
T. S. 220	pliers, chisel, screwdrivers, stamp, spanners, hammer, milling cutters, knives, tongs etc.	230oc-550o	tempering salt fro alloy steels and high carbon steels. martempering & austempering of steel.
T. S. 540	tempering salt for decarb free hardening of high speed steels.	540oc-700o	tempering & quenching for h. S. Steels, cutting tools after heating n. S. 970.
T. S. 330	tempering salt for aluminium.	330oc-535o	for solution treatment hardening and annealing of aluminium.
T. S. 495	tempering salt for tool steels.	495oc-700o	tempering &quenching for high speed cutting tools.

 

 

Heat Transfer Salt - 538 – Freshly prepared HTS-538 is a white, granular solid; when melted, pale yellow. HTS-538 is an eutectic mixture of water-soluble, inorganic salts. It is a heat transfer medium for heating and cooling between 300-1100⁰F (149-538⁰C) that is used in process operations, such as reactor temperature maintenance, high-temperature distillation, reactant preheating, rubber curing and rotational molding.

 

Working Range : - 149 - 538⁰C

 

Spinnerets, spinning heads, strainers, extruder screws and other polymer handling equipment may be cleaned of polymers by immersion in a molten oxidizing eutectic salt mixture HTS-538. This procedure has the obvious advantage of oxidizing the polymer from precision surfaces at relatively low temperatures with negligible corrosion pitting or dimension change.

 

HTS-538 is used because it has a low melting point (288⁰F/142⁰C), high heat transfer coefficient, thermal stability, and low cost. It is non fouling – a commonly recognized defect of many organic heat transfer media. HTS is nonflammable, non explosive and evolves no toxic vapors under recommended conditions of use.

 

HTS-538 keeps investment and operating costs to a minimum. It can be used at atmospheric pressure which eliminates the necessity for expensive, high-pressure equipment. It has a low degree of corrosivity toward common materials of construction. Plain carbon steel, for example, can be used for installations that operate up to 850⁰F (454⁰C)