Salt Bath 709 / 718 / 818
Installation and Operating Manual
North American Model
June 2019
Page
4
of
36
It is the user’s responsibility to be knowledgeable regarding any and all contaminants, produced by during heat treat process and to take steps to properly
and legally contain and dispose of these contaminants.
It is the user’s responsibility to provide ventilation capable of removing all gases, fumes and other airborne contaminants produced by the heat treating
salts from the work the area and building structure.
Do not store flammable or combustible products near or in the same room the kiln such as gasoline, paint, aerosol cans, paper, curtains, plastics, etc.
Better yet, store these items in another separate structure designed for this purpose.
Position the power supply cable, thermocouples and other materials in such a way as not to create a tripping hazard around the kiln.
The area around the kiln should be free of obstructions that interfere with the proper and safe operation of the kiln.
Never place anything under or above the kiln for storage. Absolutely nothing should be propped against the kiln.
Kiln Use Safety
Your work-piece(s) must be absolutely CLEAN. The steel work-piece, any steel work-piece holders and thermocouples you are immersing into the salt
bath must be absolutely free of moisture, grease, oil or any other contaminants. Contaminants, when immersed into the salt bath, will vaporize and
expand very quickly and violently. This violent expansion pushes the molten salts out of the top of the salt pot itself and into your work area. This
presents a fire and burn hazard which may result in personal injury or death as well as building structure damage.
Evenheat salt bath kilns are designed for the heat treatment
of carbon steels only
. Do not attempt to heat treat any material other
than carbon steels or
stainless steels
. If you are unsure as to the composition of a particular piece, do not heat treat it.
Tools and/or work-piece holders may find their way into the molten salt during use therefore; any tools and/or work-piece
holders must be constructed of
carbon steels or stainless steels.
Do not attempt to heat treat any coated or plated steel. Coatings and plating’s include, but are not limited to zinc (galvanized), aluminum (aluminized) and
chrome.
When heating the salt bath salts from a solid to a liquid molten state do so at no greater than a 1000°F per hour heating rate (537°C per hour rate).
Heating too quickly can result in a pressure buildup within the vessel that contains the salts (salt pot). This pressure buildup can result in the salts erupting
from the salt pot and entering your work area.
This presents a fire and burn fire hazard which may result in personal injury or death as well as building
structure damage.
DO NOT USE HEAT TREAT SALTS THAT CONTAIN CYANIDE
. Cyanide is toxic and presents sure death to human life.
USE EXTREME CARE WHEN USING HEAT TREAT SALTS THAT CONTAIN NITRITES/NITRATES.
Nitrites/Nitrates are generally found in low temperature,
tempering salts. Nitrite/Nitrate containing salts are toxic and can produce poisonous gases and/or explode if taken to too high of a temperature. If using
nitrite/nitrate containing salts it is highly recommended that a suitable ventilation system be used to safely remove any fumes or gases from the work
area. Follow all storage and use procedures.
DO NOT
heat or re-heat any work-piece, work-piece holder or other work-piece devise that has been subjected to a nitrite/nitrate containing bath
without
first removing all traces of the nitrite/nitrate salt from the work-piece or work-piece devices
. Failure to do so will cause the nitrite/nitrate based salts to
exceed their safe working temperature and release poisonous gases.
Many hardening temperature salts are sodium chloride based. Sodium chloride is what we know generally as “salt”. These heat treat salts do contain some
degree of additives which may or may not represent a hazard. Know the salts you are using and take any additional, necessary and required precautions.
The Salt Bath kiln is designed for the heating of heat treating salts only. Do not attempt to heat oils, water or other substances. Failure to follow this
instruction presents a possible fire and electrocution hazard which can result in property damage, injury or death.
