Rapid quenching tube type heating furnace having protecting atmosphere in laboratory
The invention discloses a rapid quenching tube type heating furnace having a protecting atmosphere in a laboratory. The rapid quenching tube type heating furnace comprises a furnace shell, a heating and heat insulating mechanism and a sealing mechanism, wherein the heating and heat insulating mechanism is arranged inside the furnace shell; the furnace shell comprises a shell tube, a right end cover, a left end flange tube, a rectangular flange tube, a lower sealing tube and a vacuum chamber shell tube, wherein the vacuum chamber shell tube is welded on the shell tube, and a vacuum chamber is formed between the inner wall of the vacuum chamber shell tube and the outer wall of the furnace shell; the right end cover and the left end flange tube are respectively welded on two ends of the shell tube; the lower sealing tube is welded on the lower side of the shell tube and is close to the right end cover; the rectangular flange tube is welded on the right end cover, and the rectangular flange tube is communicated with the lower sealing tube. Due to the adoption of the mode, a material sample can be immersed into a quenching pool filled with a quenching medium at the shortest time during quenching, so that a quenching effect is ensured; the quenching operation is safe and rarely exposed in air , so that the oxidation of the material sample is reduced. 1. A laboratory rapid quenching with protective atmosphere of the tube type heating furnace, characterized in that includes: furnace shell, heating a heat insulating mechanism and a sealing mechanism, the heating thermal insulation mechanism is provided in the outer shell of the furnace; the furnace shell comprises a casing tube, the right end cover, a left end flange pipe, rectangular flange pipe, the so sealed tube and the vacuum chamber, the vacuum chamber is welded on the outer shell tube so, the inner wall of the vacuum chamber of the furnace between the outer wall of the outer casing to form a vacuum chamber; and right margin states the left end of the flange pipe are respectively welded at the two ends of the casing tube, the lower sealing tube is welded on the so right margin states and close to the underside of the cover; the said rectangular flange welded on the right end cover, and the rectangular flange pipe and the lower sealing tube is connected; said sealing mechanism including a sealing mechanism 1st, 2nd 3rd of a sealing mechanism and a sealing mechanism, the sealing mechanism 1st, 2nd 3rd of a sealing mechanism and a sealing mechanism are respectively fixed in the rectangular flange pipe, the left end of the flange pipe and the lower sealing tube. 2. A laboratory rapid quenching with protective atmosphere of the tube type heating furnace according to Claim 1, characterized in that the heating and heat-preservation mechanism comprises alumina ceramic tube, wire, thermocouple, sealing joint, and heat insulation block 1st 2nd heat insulating block, the alumina ceramic tube is arranged in the housing tube, alumina ceramic tube and the outer wall of the casing tube forms a heat-insulating layer between the inner wall of; the one end of the aluminum oxide ceramic tube of the pipe is communicated with the left end flange, the other end of the alumina ceramic tube is provided with a gap below the, notch and the lower sealed tube and rectangular flange tube is connected, the alumina ceramic tube of the middle of the outer wall of the spiral with a semicircular duan Kainichrome wire trough ; the sealing joint is fixed on the right end cover, through the shaping of the sealing joint extends into the furnace, furnace casing around the furnace within the alumina ceramic tube and is clamped in the spiral wire groove; wherein the thermocouple is through the sealing joint is inserted into the aluminum oxide ceramic tube, the sealing of the joint between the thermocouple and the wire through the high-temperature-resistant insulating resin casting is fixed on the sealing joint; the 1st heat-insulating block is arranged on the alumina ceramic tube, the 2nd heat-insulating block is arranged in the inside of the rectangular flange. 3. A laboratory rapid quenching with protective atmosphere of the tube type heating furnace according to Claim 1, characterized in that the sealing mechanism includes 1st 1st rotary joint seal cover and the sealing cover, the sealing cover the switching head comprises a connecting flange and is fixed on the connection flange of the screw shaft, is fixed to the flange through a bolt on the end face of the rectangular flanged pipe; the 1st is provided with a screw thread on the inner wall of the sealing cover, the sealing cover and the sealing cover 1st of the screw shaft are connected by screw thread; 1st between the sealing cover and the sealing cover adapter head and adapter and between the rectangular flange tube is provided with a gasket, the gland bush is made of a high temperature resistant rubber. 4. A laboratory rapid quenching with protective atmosphere of the tube type heating furnace according to Claim 1, characterized in that the sealing mechanism includes 2nd sealing cap 2nd, 2nd 2nd metal spacing sleeve and sealing envelope, a valve is arranged on the sealing cap 2nd; the 2nd sealing sleeve is welded in the cylinder on the left end, the 2nd 2nd metal partition is sleeved in the sealing envelope and the left end of the left end of the flange pipe between the flanged pipe, the sealing cap 2nd and 2nd sealing envelope through the screw is fixed, with the sealing cap 2nd 2nd 2nd metal spacing sleeve and between the metallic partition between 2nd sealing envelope is provided with a sealing ring, the sealing ring is composed of a high temperature resistant rubber. 5. A laboratory rapid quenching with protective atmosphere of the tube type heating furnace according to Claim 1, characterized in that the sealing mechanism includes 3rd 3rd sealing cover, 3rd 3rd metal spacing sleeve and sealing envelope, 3rd sealing the cover is equipped with a valve; in the 3rd sealing envelope on the lower sealing tube, the metal partition is sleeved on the the 3rd 3rd sealing sleeve and the lower sealing tube between the lower seal of the tube, the sealing cap is 3rd and 3rd sealing envelope through the screw is fixed, with the sealing cover 3rd 3rd 3rd metal spacing sleeve and between the metallic partition between 3rd sealing envelope is provided with a sealing ring, the sealing ring is composed of a high temperature resistant rubber. 6. A laboratory rapid quenching with protective atmosphere of the tube type heating furnace according to Claim 1, characterized in that the vacuum chamber is provided with a valve so. 7. A laboratory rapid quenching with protective atmosphere of the tube type heating furnace according to Claim 2, characterized in that the heat insulating block and 1st 2nd heat-insulating block is fixed with a hook, the 2nd heat insulation block length is greater than the inner diameter of the lower sealing tube. 8. A laboratory rapid quenching with protective atmosphere of the tube type heating furnace according to Claim 1, characterized in that the lower part of the corresponding to the lower sealing tube is provided with a quenching bath, the quenching bath is provided with a quenching medium. 9. A laboratory rapid quenching with protective atmosphere of the tube type heating furnace according to Claim 2, characterized in that the wire is provided with two, two furnace is between the insulation by the ceramic tube. 10. A laboratory rapid quenching with protective atmosphere of the tube type heating furnace according to Claim 2, characterized in that the heat insulation layer is filled with a heat insulating material.