7 results about "Gas protection" patented technology

The invention discloses a consumable electrode gas shielded arc deposition three-dimensional printing method. The method comprises the following steps: (1) a metal component three-dimensional digital model is designed in three-dimensional software; three-dimensional printing system software is adopted to slice the three-dimensional digital model to generate multiple two-dimensional data piece layers; and a processing path is formed through analysis; (2) single layer of metal components are molded through deposition by a welding gun according to the processing path; and in the welding gun, the fuse diameter is 0.08-1.5 mm, the welding voltage is 14-20 V, the welding current is 2-20 A, the wire walking speed is 1-12 mm.s-1, the wire feeding speed is 0.5-15 mm.s-1, and the shielded gas pressure is 2-5 Mpa; and (3) after deposition molding of the single layer of metal components, a three-dimensional control platform automatically adjusts a gap between the welding gun and a newest generated surface; and the three-dimensional deposition molding of the metal components is finished after multiple times of circulation. The three-dimensional metal components, molded by the method through deposition, improve the shape precision and the surface quality, and improve the metallographic structures and the uniformity; and in addition, the method has the advantages of low cost and high deposition rate.

The invention belongs to the aluminum alloy manufacturing technology field and relates to a manufacturing method of an aluminum alloy three-layer composite material for brazing. The method mainly comprises the steps of component proportioning of a brazing layer, fusion casting, saw cutting, surface milling, hot rolling, proportioning of a base body layer, fusion casting, saw cutting, surface milling, surface treatment of the two, seaming assembling, heating, hot rough rolling compounding, hot finish rolling, cold rolling, withdrawal and straightening cleaning, finished product annealing, slitting and packaging. Through a component optimization design, strength of a composite material and anti-sagging performance after high-temperature brazing can be improved, meanwhile, balance between mechanical performance and corrosion performance is guaranteed, and a brazing requirement of controllable gas shielded welding can be well satisfied. A two-stage heating mode of homogenizing heat treatment and hot rolling heating is performed at the same time after a brazing material and a matrix cast ingot are combined so that production efficiency can be greatly improved, energy consumption is reduced and product performance requirements are satisfied.

The invention relates to the technical field of mechanical fixing support accessory equipment, in particular to portable fixed support equipment for a gas protection welding furnace. According to the portable fixed support equipment, the height of a support device can be adjusted according to needs of workers to improve the adaptive capacity of the support device; the support device can incline to reduce use limitation of the support device; the support device can rotate so that the practicability of the support device can be improved; the portable fixed support equipment comprises the support device, a support and a base plate, and the support comprises an inserting column, an inserting pipe, a limiting column, two limiting springs and two limiting blocks; left through holes and right through holes are formed in the left side wall and the right side wall of the inserting column correspondingly, and a plurality of left limiting holes and a plurality of right limiting holes are longitudinally formed in the left side wall and the right side wall of the inserting pipe correspondingly; the support device comprises a supporting plate, a supporting frame, a first rotary shaft, a second rotary shaft and a limiting rod, and a first groove is formed in the top end of the supporting plate; the portable fixed support equipment further comprises a supporting disc and a rotary column, and a storing groove is formed in the top end of the supporting disc and internally provided with a ball bearing; and the portable fixed support equipment further comprises two supporting columns and two pulleys.

The invention relates to an amorphous alloy ultrasound-assisted induction heating welding method. The method includes the following steps that the to-be-welded surface of a to-be-welded amorphous alloy is cleaned; ultrasonic-vibration-assisted welding is carried out; inert gas is introduced for treatment; the amorphous alloy is synthesized; and inert gas shielding cooling is carried out. By meansof the amorphous alloy ultrasound-assisted induction heating welding method, oxide films and other contaminants on the to-be-welded surface of the to-be-welded amorphous alloy can be removed, the contaminants are prevented from hindering contact and wetting of the to-be-welded surface of the to-be-welded amorphous alloy, the welding quality and the synthesis efficiency are improved, the to-be-welded amorphous alloy is prevented from being oxidized, especially, the to-be-welded surface of the to-be-welded amorphous alloy is prevented from being oxidized, welding of the large plane of the amorphous alloy is achieved, the space dimension of the amorphous alloy is increased, and the synthesized amorphous alloy has excellent mechanical performance.

The invention discloses a novel alternative current high voltage acquisition circuit which comprises a high voltage resistor, a micro-transformer of current, an air gap protection device and a resampling circuit, wherein the high voltage resistor is connected in series with a primary coil of the micro-transformer of current, the air gas protection device is connected between two ends of the primary coil of the micro-transformer of current, and the resampling circuit is connected between the two ends of a secondary coil of the micro-transformer of current. The novel alternative current high voltage acquisition circuit firstly converts primary high voltage into weak current signals, and then samples the weak current signals and converts the signals into secondary low voltage signals in such a manner that the structure of a secondary circuit is simpler. In addition, primary voltage is isolated from secondary voltage. Furthermore, current signals are transmitted between the primary voltage and the secondary voltage, and high resistance to interference is achieved.

The invention discloses a two-dimensional stroke extension self-sealing irradiation relaxation full-automatic detection device and method, and belongs to the field of material characteristic measurement. An X-direction movement guide rail assembly is fixedly installed on a vibration isolation rack, a Y-direction movement guide rail assembly is assembled on the X-direction movement guide rail assembly in a mode of being capable of reciprocating in the X direction, a horizontal linear movement sliding block is installed on the Y-direction movement guide rail assembly in a mode of being capable of reciprocating in the Y direction, and a self-sealing irradiation relaxation assembly is fixedly installed on the horizontal linear movement sliding block. The pressure measuring system and the support are sequentially and fixedly installed on the vibration isolation rack, and the box cover grabbing assembly and the automatic bolt screwing-in and screwing-out and gas exchange system are sequentially installed on the same side face of the support in the Y direction. The self-sealing irradiation relaxation assembly is sequentially matched with the bolt automatic screwing-in and screwing-out and gas exchange system, the box cover grabbing assembly and the pressure measuring system to complete detection. The problems of full-automatic and high-precision measurement of irradiation relaxation characteristics and automatic gas protection are solved.