54results about How to "Achieve heat treatment" patented technology

The invention discloses a production method of a cast-state ductile iron QT800-5 by using fired mold precision casting. The method comprises the following steps of fired mold precision casting of shell and shell making, molten iron smelting, spheroidizing treatment, inoculation treatment, mold shell casting and module cooling so as to obtain the QT800-5, wherein the requirements that the tensile strength Rm is larger than or equal to 800 MPa and the elongation percentage after fracture A is larger than or equal to 5% can be met. The production method of cast-state ductile iron QT800-5 by usingthe fired mold precision casting has the beneficial effects that low-cost copper and manganese are added to improve a pearlite content in a cast-state ductile iron matrix, the structure is strengthened and refined, the mechanical property of a material is improved, the cost can be effectively reduced, and the cast-state heat-free treatment is realized; and meanwhile, deformation is avoided afterthe heat treatment of a casting is avoided.

The invention discloses a treatment mechanism of an engine cylinder. The treatment mechanism comprises a chassis, an angle adjusting unit, a clamping unit, a height adjusting unit, a boring power unit, an adjustable boring cutter unit and a heat treatment unit; the clamping unit is mounted at the top of the chassis through the angle adjusting unit; four mounting plates are arranged on the side surface of the chassis at equal angles; the boring power unit is mounted on the mounting plate on the left side through the height adjusting unit; the adjustable boring cutter unit is mounted at the bottom of the boring power unit; the heat treatment unit is mounted on the mounting plate on the back side; and the heat treatment unit comprises a heat treatment equipment box, a baffle plate, an L-shaped door plate, equipment box legs, an electric push rod, a support rod, an end rod, a through hole, a door plate shaft, a push-pull block, a hinge support, a heat conducting circular plate, a circularblind groove and an electric heating wire. The treatment mechanism can continuously perform the production steps of the engine cylinder, improves the production continuity, effectively improves the production efficiency, reduces the manual participation, and reduces the labor cost.

The invention relates to a pin receiving portion (7) for a hub for receiving the pin (6) of a connection unit, in particular of a roller (1), said pin receiving portion (7) having a main part (8) with an opening (9), which is at least partly lined with at least one wear plate (10), for inserting the pin (6). The wear plate (10) has a front surface (10.1) for bearing on the pin (6), said front surface delimiting the opening for the pin (6), and the wear plate (10) has a rear surface (10.2) which faces away from the front surface (10.1) and which rests against a receiving surface (8.1) of the main part (8) at least temporarily. The wear plate (10) has a lower hardness on the wear plate rear surface (10.2) than the receiving surface (8.1) of the main part (8).

The invention relates to a heat treatment process of a long shaft. The heat treatment process comprises the following steps that S1, a heat treatment device is selected, and the long shaft is fed to the heat treatment device; S2, quenching is carried out, wherein the quenching temperature ranges from 830 DEG C to 850 DEG C; S3, cooling is conducted, wherein the long shaft is cooled in a spraying mode, and the cooling temperature ranges from 24 DEG C to 26 DEG C; S4, tempering is conducted, wherein the tempering temperature is divided into first-stage tempering temperature and second-stage tempering temperature, the first-stage tempering temperature ranges from 710 DEG C to 750 DEG C, and the second-stage tempering temperature ranges from 500 DEG C to 600 DEG C; and S5, discharging is carried out. The heat treatment process has the effects of reducing bar damage and being good in heat treatment effect.

A processing method for heat-preservation heat treatment of a large workpiece by adopting an circular rail heating robot comprises the technical schemes that for the large workpiece which is difficultly accommodated by an ordinary heat treatment furnace, a circular rail which can move up and down is arranged at the periphery of the workpiece, and the industrial robot walks on the rail and can quickly arrive at any position of the periphery of the workpiece. A mechanical arm is provided with a burner for heating the large workpiece. At the same time, the temperature of the workpiece surface is sensed through a heat sensor, to a part with the lower temperature, the robot automatically moves to the part to heat the part automatically through the rail, the large workpiece temperature is kept in a constant range, and thus the process of heat treatment is completed. The method provided by the invention breaks the restriction of the traditional heat treatment device on the processed workpiece size, can achieve heat treatment of the large workpiece with relatively low cost, and is especially suitable for heat treatment of the large workpiece with fewer number and huge size.

The invention discloses tempering heat treatment equipment and technique for bainite high-strength finish-rolled thread steel bars and belongs to the technical field of metal heat treatment equipment and techniques. The tempering heat treatment equipment and technique are used for conducting batched tempering heat treatment on the bainite high-strength finish-rolled thread steel bars. According to the technical scheme, the tempering heat treatment equipment adopts the structure of a double-station trolley and a double-station heat preservation hood. Alternate loading heat treatment can be achieved through the double-station trolley, the heat preservation time in a heat treatment furnace within a certain temperature range can be shared by the double-station heat preservation hood, the heat treatment efficiency of the heat treatment furnace is greatly improved through the alternate heat treatment process, energy resources are saved, and batch production of products is achieved. According to the heat treatment technical method, on the basis that uniform biphase structures and reasonable strength and toughness matching of the bainite high-strength finish-rolled thread steel bars are guaranteed, and the residual stress of the structures and the sensitivity of a hydrogen-induced crack are reduced, small-batch production can be organized, heat treatment of short materials is achieved with a certain fixed length range, and the application is wide and flexible.

The invention relates to the technical field of hot stamping, and in particular relates to a method for preparing a fitness equipment part through a hot stamping process. The method comprises the steps that: a blank is heated to a preset temperature and then adjusted to be formed; secondary heating is performed on the adjusted and formed blank; cutting is performed; a prototype part is obtained; the prototype part is subjected to at least one time of temperature supplementing and stamping, so that a stamped part is obtained; and the stamped part is subjected to physicochemical treatment, so that the finished part is obtained. According to the metal thermoplastic forming principle used in the invention, heat treatment of the blank is achieved while forming is performed; the forming performance of the material is improved; meanwhile, waste of the blank is reduced through stamping; resources are saved; environment friendliness and low carbon are achieved; and the manufacturing cost can be reduced.

The invention provides a martensitic stainless steel with high Mn content, which comprises the following chemical compositions in percentage by weight: 0.03-0.1% of C, 0.20-0.80% of Si, 1.2-3.0% of Mn, 12-14% of Cr, 0.008-0.03% of N, the balance Fe and unavoidable impurities. By improving Mn content in steel, adding proper amount of N and utilizing Mn and N to strengthen, the invention improves the strength and the rigidity of the martensitic stainless steel. Compared with other alloys, the cost of Mn is lower and the resource is richer. The low-carbon martensitic stainless steel after being strengthened by utilizing Mn and N only needs quenching heat treatment to obtain martensitic stainless steel materials with favorable strength, tenacity and corrosion resistance, and has more convenient use and superior performance compared with commonly used tempered martensitic stainless steel.

The invention discloses a processing method for a spring piece used in a tuning fork type crystal resonator. After coating the surface of a strip-shaped zinc-nickel-nickel copper with a light-absorbing coating, a progressive die is used for continuous punching and forming, and a laser is used for annealing treatment, and finally a cavitation jet is used Wash to obtain the spring sheet for resistance welding. The beneficial effects of the invention are: to realize the collinear processing of each process in the production and processing of the spring sheet for tuning fork type crystal packaging, reduce the turnover process, and use the new heat treatment and cleaning method to achieve the purpose of energy saving and environmental protection.

The invention relates to a pin receiving portion (7) for a hub for receiving the pin (6) of a connection unit, in particular of a roller (1), said pin receiving portion (7) having a main part (8) with an opening (9), which is at least partly lined with at least one wear plate (10), for inserting the pin (6). The wear plate (10) has a front surface (10.1) for bearing on the pin (6), said front surface delimiting the opening for the pin (6), and the wear plate (10) has a rear surface (10.2) which faces away from the front surface (10.1) and which rests against a receiving surface (8.1) of the main part (8) at least temporarily. The wear plate (10) has a lower hardness on the wear plate rear surface (10.2) than the receiving surface (8.1) of the main part (8).

The invention discloses a continuous heat treatment device, which uses a motor to drive the take-up wheel to rotate through a transmission belt, so as to drive the lead wire to pull the material to be heat treated to pass through the heating zone and cooling zone of the heat treatment device in sequence, and perform dynamic continuous heat treatment and cooling treatment. One step realizes the rapid temperature rise and fall of the material, reduces the temperature difference at different positions of the material during the heat treatment process, improves the quality of the heat treatment, and expands the application range of the device. The invention also discloses a MgB 2 Method for heat treatment of superconducting wire / strip, the method will MgB 2 The superconducting wire / strip is placed in the above-mentioned continuous heat treatment device, and then the heat treatment of continuous rapid temperature rise and fall is carried out under the protection of an inert gas, which avoids the MgB 2 The superconducting core wire generates non-superconducting impurity phases and MgB 2 The phenomenon of sticking between wires / strips is flexible and controllable, convenient and efficient.

A simple lifting platform belongs to the technical field of product heat treatment platforms, and in particular relates to a simple lifting platform for product heat treatment. The invention provides a simple lifting platform which is simple in structure, stable and reliable, and can realize vertical and lateral movement. The invention includes a base, on which two groove-shaped columns are arranged, and a crossbeam is arranged between the top ends of the two groove-shaped columns. A slider matching the groove is provided; the slider is connected to the vertical side of the same L-shaped lifting frame; a lead screw is arranged under the beam, and a screw nut is arranged on the lead screw, and a connecting screw is arranged on the screw nut. frame, the vertical side of the L-shaped lifting frame is provided with a connecting groove that matches the connecting frame; the horizontal side of the lifting frame is provided with a horizontal slide plate, and the horizontal slide plate is provided with a rotating gear; the lifting frame A toothed rack cooperating with the rotating gear is arranged on the horizontal side of the frame.