69results about How to "Guaranteed heat treatment performance" patented technology

The invention relates to a heat treatment deformation control method for a large-diameter and large-modulus elliptical molded surface container semispherical shell and belongs to the technical field of container manufacturing. By means of the heat treatment deformation method, due to the fact that an integrated quenching and aging heat treatment tool is designed, the elliptical molded surface container semispherical shell and the heat treatment tool can be tightly matched, the quenching transfer time is shortened, the phenomenon that the top of the shell collapses and pits happen in the circumferential direction of the shell during quenching is avoided, quenching and time aging deformation is reduced, and therefore the heat treatment performance of the elliptical molded surface container semispherical shell can be ensured; and meanwhile, the subsequent machining precision of the shell is also ensured. In addition, a UCON water solution with the concentration ranging from 6% to 10% is adopted in the method to serve as a quenching medium, dynamic flowing of the water solution is maintained, the cooling speed and uniformity of the shell are ensured, meanwhile, quenching deformation is also controlled, and therefore the product precision is ensured.

The invention discloses a heat treatment technology of a martensite stainless steel workpiece. The technology comprises the steps of annealing, quenching, a primary tempering technology and a secondary tempering technology. By adopting the above mode, the heat treatment technology allows a forged piece to satisfy a heat treatment hardness requirement, guarantees the heat treatment performance, realizes a high quenching hardness, and also realizes alloy uniformization, crystal grain refinement and forging stress elimination.

The invention discloses a heat treatment device for a rotary support outer ring raceway. The heat treatment device comprises a cooling barrel, the upper end of the cooling barrel is symmetrically provided with two supporting columns, the two supporting columns are provided with a heating unit capable of ascending and descending up and down through a horizontal beam, the cooling barrel is divided into upper and lower two layers, and the upper layer of the cooling barrel contains cooling liquid and is further internally provided with a positioning unit capable of moving up and down and capable of rotating. According to the heat treatment device for the rotary support outer ring raceway, by means of the positioning unit, rotary support outer rings of various sizes can be placed, and heat treatment is performed on these rotary support outer rings at the same time, and the heat treatment efficiency of the rotary support outer ring raceway is greatly improved; and in addition, by means of the heat treatment device for the rotary support outer ring raceway, heating, heat preservation and cooling are concentrated on one device, three heat treatment processes of the heating, the heat preservation and the cooling are made to have good continuity, and the heat treatment effect is guaranteed.

The invention discloses a degreasing sintering furnace for metal powder injection molding. The degreasing sintering furnace comprises a furnace body. The lower portion of the furnace body is connectedwith a lifting rotating device through a gate device, and an outer shell of the lifting rotating device is connected with the gate device. The outer shell is provided with a loading and unloading door, and the outer shell is internally provided with a lifting rotating mechanism. A material placing platform is arranged at the upper end of the lifting rotating mechanism, and a gap is formed betweenthe material placing platform and the furnace body. The material placing platform can enter and exit the furnace body through the gate device under the driving of the lifting rotating mechanism and can rotate in the furnace body. The degreasing sintering furnace for metal powder injection molding can enable products to be heated more uniformly and improves production efficiency.

The invention discloses a thin steel wire secondary heating treatment method and device, the method comprises the following steps: using an induction heater to heat a thin steel wire in an induction heating coil until the temperature is equal to or slightly lower than the curie point of the thin steel wire; and using a resistance heating device to heat the thin steel wire until the temperature isabove the austenitizing temperature. The method also comprises the following step: cooling the heated thin steel wire. The method provided by the invention can be used for carrying out thermal refining, quenching, normalizing, backfire, isothermal quenching, isothermal annealing, isothermal soxlet process, recrystallization annealing or rapid balling isothermal annealing on the thin steel wire.

In order to solve the problems of poor effect, low construction efficiency, and easy-deformation of a pipe screen in the long seam welding and heat treatment of the tube screen, a long seam welding and post-weld heat treatment process for the high-alloy heat-resistant steel pipe screen is provided. The welding and heat treatment of the long seam of the pipe screen are mainly carried out by adopting the methods of subsection interval skip welding and heat treatment and subsection ladder heat treatment, thereby avoiding the simultaneous heating and cooling of the long seam of the pipe screen, reducing the deformation rate of the seam of the pipe screen, and greatly improving the construction efficiency at the same time.

The invention relates to a single-tubular gas protection fiber thermal treatment device. The device comprises a heating pipe which is provided with two opening ends and made of high temperature alloy, wherein sealing heads are fixed at the opening positions at the two ends of the heating pipe; the two sealing heads are respectively provided with a feeding port and a discharging port which are corresponding; a left side electrode clamping end and a right side electrode clamping end are respectively fixed on the outer wall of the heating pipe; and the pipe wall of the heating pipe is provided with a protection gas inlet. According to the invention, the heating pipe made of high temperature alloy is adopted; and the heating pipe has small internal space and uniform and controllable temperature, thereby ensuring thermal treatment property and saving energy.

The invention provides an iron wire heating diversion device. The device is arranged in the accommodation cavity of a heating furnace and comprises a support seat, a blower fan, a bracket, and a tray, which are arranged from bottom to top. The blower fan is rotatingly arranged on the support seat through a rotation shaft. The top surface of the support seat is provided with a plurality of baffle plates. The baffle plates are evenly arranged around the blower fan. The center of the bracket is provided with a first air hole. The center of the tray is provided with a second air hole. The bottom surface of the bracket and the top surface of the support seat form a first air channel. Two neighbored baffle plates form a first air channel. In the provided iron wire heating diversion device, the support seat is provided with an air blower and first air channels, the bracket is provided with a first air hole, the tray is provided with a second air hole, the first air hole and the second air hole are opposite to the blower fan; when the blower fan rotates, hot air goes through the second air hole and the first air hole and is discharged from the first air channels, thus thermal energy circulation is formed, the uniformity of temperature in a thermal insulation box can be guaranteed, and the iron wire heating effect is ensured.

Provided is a double-roller furnace. The body of the double-roller furnace comprises a first processing furnace and a second processing furnace, the first processing furnace and the second processing furnace are connected through a bolt, dismounting and maintaining of the first processing furnace and the second processing furnace can be achieved conveniently, the rear end of the second processing furnace is supported through a bearing seat, the processing furnaces can be expanded and shrunk freely due to variation of temperatures, heat treatment of the two processing furnaces is conducted on a workpiece, products which are not well processed by the second processing furnace can be processed again in the first processing furnace, independent control systems are used in the two processing furnaces, and all indexes in the processing furnaces can be absolutely guaranteed.

The invention discloses a bulge type titanium alloy self-plugging rivet manufacturing technology. The technology comprises rivet body manufacturing, rivet sleeve manufacturing and driving ring manufacturing. The rivet body manufacturing includes the following steps of 1, preparing a blank; 2, performing tampering to obtain a semi-finished product; 3, cleaning and removing surface dirt and raw material coatings formed by tampering; 4, performing thermal treatment, wherein a, first-time thermal treatment is performed, the cleaned semi-finished product is placed into a thermal treatment furnace under the temperature of 680-720 DEG C for production, the temperature is kept for 10-20 min, and then post-air-cooling is performed; b, secondary thermal treatment, the semi-finished product obtainedafter air cooling is placed into a thermal treatment furnace under the temperature of 450-500 DEG C for heat preservation for 8-10 h, and then post-air-cooling is performed; 5, performing centerless grinding, wherein the semi-finished product obtained after thermal treatment is placed into a centerless grinding machine for rod diameter grinding; 6, rolling threads, wherein the ground semi-finishedproduct is rolled to obtain a thread and a ring groove; 7, performing surface treatment. The machining efficiency and the yield are high, the product corrosion resistance, structural strength, surface hardness, the tissue uniformity and other properties are excellent, the mass is low, and the product usage rate is increased.

The invention relates to a layered wheel hub blank heat-treatment material rack. The layered wheel hub blank heat-treatment material rack comprises a base, stand columns and crossbeams. The base, the stand columns and the crossbeams form a cubical frame. The multiple stand columns are vertically, uniformly and fixedly arranged on the base. Multiple layers of the staggered crossbeams are uniformly and fixedly distributed between each two adjacent stand columns, and each layer of the crossbeams form a uniform horizontal grid. The layered wheel hub blank heat-treatment material rack has a scientific design and a simple structure, is firm and durable, can be moved conveniently, has a long service life and saves a production cost. The layered wheel hub blank heat-treatment material rack can receive more wheel hub blanks thereby improving production efficiency, guarantee workpiece heating uniformity, and effectively reduce deformation shrinkage of the wheel hub blank in heating treatment.

The invention belongs to the field of metallurgical equipment, and particularly relates to a tank-cover-free type forevacuum heat treatment furnace. Comprising a furnace bottom and a furnace cover detachably mounted on the furnace bottom, and a closed space is formed after the furnace cover covers the furnace bottom; the furnace bottom is composed of a substrate and a furnace lining which is arranged above the substrate and completely located within the range of the substrate, a heating body is arranged on the furnace lining, and a supporting bottom is further arranged on the periphery of the substrate; the furnace cover is composed of an outer cover and a lining, a heating piece is arranged on the inner side wall of the lining, and after the furnace cover is closed, the outer cover is buckled downwards to abut against the supporting bottom. The furnace cover is provided with an exhaust valve used for vacuumizing, and the exhaust valve is externally connected with a vacuum pump to work, so that vacuumizing treatment of the heat treatment furnace is achieved. According to the invention, large-batch plate heat treatment can be quickly and efficiently realized, the size of the furnace body can be adjusted according to actual use requirements, and heat treatment of materials with different specifications and sizes can be realized.

The invention discloses a hardening and tempering treatment technology for a roll. The hardening and tempering treatment technology particularly comprises the steps that crack detection is conducted on the roll, and the qualified roll is put into a preheating pipeline for preheating treatment and preheated till the temperature reaches 80-120 DEG C; the preheated roll is put into a quenching furnace for quenching treatment, specifically, the temperature is heated to 560-640 DEG C, heat preservation is conducted for 1-2 h, the temperature is heated to 940-980 DEG C, and heat preservation is conducted for 2-4 h; the roll is taken out, and the temperature is lowered to 460-500 DEG C through air cooling and then lowered to room temperature through water cooling; the roll is put into a tempering furnace for tempering treatment, specifically, the temperature is increased to 260-300 DEG C, heat preservation is conducted for 0.5-1.5 h, the temperature is increased to 620-660 DEG C, and heat preservation is conducted for 2-3 h; finally the tempering furnace is opened, the roll is cooled to 360-400 DEG C along with the furnace and then put into a cooling water pool to be water-cooled to room temperature, and then the hardening and tempering treatment technology is completed. In this way, the hardening and tempering effect can be significantly improved, the roll achieves the higher shaping, strength and hardness properties, and the product quality is high.

The invention discloses a kitchen appliance glass tempering heat treatment device and process, and belongs to the technical field of glass processing. The kitchen appliance glass tempering heat treatment device comprises a heating furnace, a glass heat treatment working area is arranged in the heating furnace, a plurality of evenly-distributed heating furnace nozzles are arranged on the inner wall of the heating furnace, a driving motor is fixed to the upper surface of the heating furnace, a rotating shaft is vertically arranged in the center of the interior of the heating furnace, the top end of the rotating shaft penetrates through the upper surface of the heating furnace and is connected with the output end of the driving motor, multiple sets of symmetrically-arranged air guide plates are fixed to the outer wall of the rotating shaft, air guide holes are formed in the air guide plates, and the movement of a rolling temperature balance ball in the furnace body of the heating furnace can be utilized to accelerate the temperature in the heating furnace to rapidly reach a balance state, so that the temperature in the heating furnace is fully uniform, the glass heat treatment effect is ensured, the phenomenon that the heat treatment quality is influenced by non-uniform temperature distribution is effectively avoided, and energy is effectively saved.

The invention discloses a supporting plate type feeding tool for isothermal heat treatment process. The supporting plate type feeding tool is characterized in that a pushing bracket is slidably installed on a sliding rail, a first stop block and a second stop block are arranged at the bottom of the pushing bracket, a plurality of pushing blocks are sequentially arranged at the top of the pushing bracket in the feeding direction, a material conveying tray is located above the pushing bracket, a plurality of feeding blocks corresponding to the pushing blocks are arranged at the bottom of the material conveying tray, a driving rotary disc is horizontally arranged below the pushing bracket, an eccentric pushing shaft is arranged at the top of the driving rotary disc, and the eccentric pushingshaft is located between the first stop block and the second stop block of the pushing bracket. According to the optimally-designed supporting plate type feeding tool for the isothermal heat treatmentprocess, the driving rotary disc drives the pushing bracket to reciprocate through the eccentric pushing shaft, and then the material conveying tray is driven to conduct feeding at a low speed, so that parts slowly enter a heat treatment furnace along with the material conveying tray, part stacking is prevented, the part heat treatment time is prolonged, and the heat treatment effect is guaranteed.

The invention discloses a self-plugging rivet manufacturing process. The self-plugging rivet manufacturing process comprises rivet body manufacturing and rivet sleeve manufacturing, wherein the rivetbody manufacturing process comprises the following steps of 1, preparation of rivet body blanks: selecting an A286 raw material with the appropriate specification and mass; 2, upsetting forming: conducting upsetting on the selected A286 raw material through molds with the corresponding specifications in a cold upsetting machine 2-3 times to form heads, steps and rod parts of rivets to obtain semifinished rivet bodies; 3, cleaning: feeding the semifinished rivet bodies onto a corresponding cleaning line to remove oil dirt and blasted surface sand generated after upsetting; 4, heat treatment: feeding the cleaned semifinished rivet bodies into a heat treatment furnace of 650-700 DEG C for production heat preservation for 8-10 h, and then conducting air-cooling; 5, thread rolling: conducting thread rolling on the semifinished rivet bodies subjected to heat treatment to form knurls, threads and grooves; and 6, surface treatment: conducting surface treatment on the semifinished rivet bodiessubjected to thread rolling to obtain finished products. The self-plugging rivet manufacturing process is simple in working procedure, high in machining efficiency and qualified rate of the products and good in quality.

The invention discloses a quenching water heat recovery system for heat treatment of aluminum alloy wheels, which comprises a quenching tank in which a water supply pipe is communicated, and a water delivery pipeline extending to a painting and cleaning reservoir is also arranged in the quenching tank. The water delivery pipeline is provided with a water pump. The hot water in the quenching tank is sent to the painting and cleaning reservoir, which can not only reduce the water temperature in the quenching tank by timely replenishing water, so as to improve the heat treatment effect, but also reduce the energy consumption of heating the cleaning water before painting, killing two birds with one stone .