External heating type nitrate furnace salt bath furnace

　　External heating type nitrate furnace salt bath furnaceIt is a common type of salt bath furnace, which includes high-temperature salt bath furnace, medium temperature salt bath furnace, nitrate furnace, salt bath tempering furnace, salt bath quenching furnace, crucible salt bath furnace, salt bath crucible furnace, transformerless salt bath furnace, electrode salt bath furnace, etc. External heating type nitrate furnace uses molten liquid medium to process workpieces, such as nitrate, alkali, oil, low melting point metals and alloys, etc. The nitrate furnace heats the workpiece at a faster heating speed and has lighter oxidation and decarburization. Suitable for various processes and chemical heat treatments such as non oxidation heating, tempering heating, isothermal quenching cooling, local quenching, isothermal quenching, etc. for railway locomotives, ball mill liners, steel balls, crusher hammer heads, and various metal mechanical parts made of wear-resistant materials made of austenitic materials.

The external heating type nitrate furnace salt bath furnace consists of a furnace body, stainless steel crucible, electric heating element, and automatic temperature control cabinet. Various processes such as quenching, tempering heating, isothermal quenching cooling, and liquid chemical heat treatment are carried out using nitrate. The furnace body is welded from steel sections and steel plates, and the furnace surface is made of cold-rolled steel plates. The furnace lining is made of energy-saving ultra lightweight high-strength refractory bricks, with aluminum silicate fibers sandwiched in between. The insulation expansion powder is filled between the furnace lining and the furnace shell. The entire structure is a standard energy-saving furnace lining, and the resistance wire is wound into a spiral shape using a thicker diameter high-temperature resistance wire according to the uniform temperature cloth method. It is placed on the wire support brick of the furnace lining. The wire support brick adopts a front upward 20 ° anti drop brick, and the resistance wire is not easy to fall out. The crucible is made of heat-resistant stainless steel plate welded tightly. Install a stirring motor on one side of the crucible, and form a porous guide hole at the bottom of the crucible. Through the stirring system, the salt solution is quickly circulated up, down, left, and right to achieve uniform temperature at any point inside the salt solution. The nitrate furnace can be used in conjunction with an automatic temperature control cabinet to quickly cool the quenched workpiece to any process temperature required for isothermal quenching in a short period of time.

According to the working temperature of the furnace, sodium chloride, potassium chloride, barium chloride, sodium cyanide, potassium cyanide, sodium nitrate, potassium nitrate and other salts are usually selected as heating media. The heating speed of the salt bath furnace is fast and the temperature is uniform. The workpiece is always heated in the salt solution, and when the workpiece is taken out of the furnace, a layer of salt film is attached to the surface, which can prevent oxidation and decarburization of the workpiece surface. Salt bath furnace can be used for quenching, annealing, tempering, cyanide treatment, aging and other heat treatment heating of carbon steel, alloy steel, tool steel, mold steel, aluminum alloy, etc. It can also be used for low oxidation heating during precision forging of steel. The steam of the heating medium in the salt bath furnace is harmful to the human body and must be ventilated during use.

Technical parameters of external heating nitrate furnace:

model	Power (kw)	Voltage (v)	Temperature (℃)	Number of districts (districts)	Crucible size (mm)	Dimensions (mm)	Loading capacity (kg)
RWY-12-5	12	380	550	1	300×400×500	920×1020×785	1100
RWY-15-5	15	380	550	1	450×450×500	1070×1070×825	1500
RWY-24-5	24	380	550	1	300×500×500	920×1120×855	1800
RWY-24-5	24	380	550	1	500×500×600	1120×1120×855	1950
RWY-24-5	24	380	550	1	400×500×700	1020×1120×985	1985
RWY-24-5	24	380	550	1	280×600×550	700×1220×840	1880
RWY-30-5	30	380	550	1	500×500×700	1120×1120×985	2200
RWY-35-5	35	380	550	1	600×500×800	1120×1120×1090	2800
RWY-45-5	45	380	550	1	500×700×700	1120×1320×990	2600
RWY-55-5	55	380	550	1	500×800×1000	1120×1420×1285	3000