43results about How to "Avoid deformation defects" patented technology

The invention discloses an in-situ piecewise heat treatment method of a large pressure container, which comprises the following steps: respectively setting an inner cavity of each section of pressure container cylinder body of the large pressure container being installed and constructed into a hearth; starting from the bottom section, performing the heat treatment on one section of pressure container cylinder body when installing and constructing the section of pressure container cylinder body; and installing and constructing one section of pressure container cylinder body on the heat-treated section of pressure container, and performing the heat treatment on the former section of pressure container cylinder body until the heat treatment is performed on the installed and constructed highest section of pressure cylinder body. The invention can save the step of heat treatment on a welding circular seam by using an electric heater.

The invention discloses a ceramic energy-saving kiln for recovering cooling waste heat in high-efficiency relay. Hot air blower; the slow cooling area is equipped with a slow cooling area outlet pipe, multiple slow cooling area air supply pipe groups, multiple slow cooling area outlet pipe groups, slow cooling area exhaust pipes and heat exchange fans; the rapid cooling area is equipped with Combustion-supporting fan, air supply supervisor and burner, the air supply supervisor is equipped with air supply pipe group in quenching area and air outlet pipe group in quenching area. By adopting the present invention, a pipeline structure for recovering hot air is formed in an efficient continuous and relay manner, and all the cooling heat when cooling ceramics at each stage is recycled and utilized, which significantly reduces the fuel consumption in the drying and firing process, and can also effectively reduce the impact of heat sources on Environmental pollution can also improve product quality.

The invention discloses a method for cleaning a vermicelli plate of a sweet potato vermicelli extrusion device. The method comprises the following steps and conditions: a. cooking the vermicelli plate: placing the vermicelli plate, to which sweet potato starch is adhered, on a bracket in a vermicelli plate cooking barrel, adding edible oil into the vermicelli plate cooking barrel until the vermicelli plate can be covered by the edible oil completely, heating and cooking at the oil temperature of 180 to 220 DEG C for 20 to 40 minutes; b. roasting the vermicelli plate: taking out of the vermicelli plate which is treated in step a, placing the vermicelli plate on an electric furnace, roasting for 10 to 15 minutes, and then cooling; c. washing and brushing the vermicelli plate: washing and brushing the vermicelli plate which is treated in step b in water for 5 to 10 minutes, so that ashed sweet potato powder in vermicelli plate holes are completely separated from the vermicelli plate; d. cleaning the vermicelli plate: cleaning the vermicelli plate which is treated in step c with clean water for 1 to 2 minutes; e. air-drying the vermicelli plate: naturally air-drying the vermicelli plat which is treated in step d for later use. The invention also discloses a vermicelli plate cooking device for implementing the method.

The invention discloses a truss shearing mechanism of a triangular truss production line. The truss shearing mechanism of the triangular truss production line structurally comprises an upper shearing device and a lower shearing device. According to the upper shearing device, two upper shearing arms are hinged to an upper hinged shaft, upper scissors are installed at the corresponding ends of the upper shearing arms, the other end of each upper shearing arm is hinged to a crankshaft driving mechanism, and the crankshaft driving mechanism drives the two upper shearing arms to shear an upper spiral rib. The lower shearing device comprises two lower shearing arms, wherein the lower shearing arms are hinged to a first lower hinged shaft and a second lower hinged shaft respectively, lower scissors are installed at the corresponding ends of the lower shearing arms, the other ends of the lower shearing arms are hinged to the two sides of the crankshaft driving mechanism, and the crankshaft driving mechanism drives the two lower shearing arms to shear a lower spiral rib. The truss shearing mechanism of the triangular truss production line has the advantages that power is low, impact on a power grid is low, the structure is simple, and the cost is low; the phenomenon that the two pairs of scissors collide with each other is avoided, the service life is long, and the quality of a sheared truss is improved; a cut of the lower spiral rib is flat after the lower spiral rib is sheared, and the phenomenon that due to the fact that the width of the inner side of the triangular truss becomes narrower, the defect of deformation of the triangular truss is avoided.

The invention discloses a steel back pressed bevel edge fine trimming continuous mold and a steel back production method. The steel back pressed bevel edge fine trimming continuous mold comprises an upper mold holder, an upper base plate, a gear ring plate base plate, a middle supporting plate, a gear ring plate, a lower mold plate, a lower base plate and a lower mold holder, wherein the upper base plate is arranged below the upper mold holder, the gear ring plate base plate is arranged below the upper base plate, the middle supporting plate is arranged below the gear ring plate base plate, the gear ring plate is embedded inside the middle supporting plate, the lower mold plate is arranged below the middle supporting plate, the lower base plate is arranged below the lower mold plate, and the lower mold holder is arranged below the lower base plate. A pressed bevel edge lower male device used for carrying out bevel edge pressing on a steel back material band is arranged on the lower mold plate. By means of the structure of the steel back pressed bevel edge fine trimming continuous mold, the bevel edge pressing process of a steel back is directly completed in the mold, the deformation defect caused by the fact that bevel edge pressing is independently carried out through an oil press is avoided, the product quality and the pass percent are improved, the process steps are reduced, and the production efficiency is improved.

An automatic welding method includes a preliminary step and a joining step. The preliminary step is configured to place a metal object having a multi-dimensional curved weld zone on a platform, and to clamp a welding torch with a welding torch clamping device. The joining step is configured to generate a relative movement between a tip of the welding torch and the multi-dimensional curved weld zone of the metal object, and to electrify the welding torch to weld the metal object by way of short circuiting arc transfer. An angle difference between a reference position and an instant position of the welding torch is 0 to 135 degrees when the welding torch welds the metal object, so as to keep the slag from spraying, wherein the welding torch is at the reference position when the tip thereof is pointed straight down towards the ground.

The invention discloses a cutting machine for a metal tube, which comprises a lengthwise base, wherein, a first support and a second support for supporting the metal tube are oppositely and horizontally arranged on two ends of the base. The cutting machine is characterized in that a box is movably arranged on the base and positioned between the first support and the second support; the metal tubecan penetrate into the box from one side thereof and penetrate out of the box from the other side thereof; the box is internally equipped with a first fixture and a second fixture at an interval for clamping the metal tube; and a cutting device is arranged in a spacing area between the first fixture and the second fixture. When the cutting machine using the structure is used for cutting the metaltube, the cutting device can horizontally move with the metal tube synchronously and complete cutting the metal tube during the movement process of the metal tube so as to effectively prevent the metal tube from being bevelled and deformed.