351 results about "Welding fume" patented technology

The invention discloses a dedusting system of a whole factory building, which comprises an air funnel, an air handling unit, a top air-return opening, an air supply pipeline and an air-return pipeline, wherein the air handling unit is arranged outside a workshop, the air funnel is arranged at the lower part of the inner side of the workshop, one end of the air supply pipeline is connected with the air funnel, and the other end of the air supply pipeline is connected with the air handling unit through the air supply pipeline; the top air-return opening is arranged at the top inside the workshop, one end of the air-return pipeline is connected with the top air-return opening and the other end of the air-return pipeline is connected with the air handling unit. The air supply direction of the air funnel is adjusted to change the air distribution of returned air, welding fume with higher temperature drifts upwards under the action of hot buoyancy, the fume further drifts upwards by the push of air sent out from the air funnel and does not move transversely, thereby the welding fume can be avoided from passing through the respiratory zone of the human body; and the fume and harmful gases are sucked into the air handling unit through the air-return pipeline under the suction action of the air-return opening at the top of the workshop and can not be directly removed outdoors, thereby the secondary pollution can not be caused.

The gas-metal arc welding of metal-core wile electrodes in the pure Ar shielding gas for carbon steel, low alloy steel, and ferritic stainless steel is described. Such shielding gas provides several benefits not realized ??the gas-metal arc welding process with solid wires. When compared to standard argon / oxygen containing gas mixtures normally used for metal cored wires, these benefits include reduced silicate islands on the weld surface for improved weld appearance, reduced welding fume, and lower weld spatter, all of which provide easier clean-up after the welding operation. Benefits also include reduced arc penetration desirable for welding on thinner materials or handling poor joint fit-up. Lower voltage requirement further makes it possible to weld on thinner materials. Lower oxygen content in the weld deposits provide better toughness and easier welding in all-positions.

The invention relates to a self-shielded flux-cored wire containing polyvinylidene fluoride resin, which comprises a shuck manufactured by adopting the home-made SPCC common mild-carbon steel strip. The invention is characterized in that flux core of the common mild-carbon steel strip consists of villaumite, carbonate, oxide, Manganese (Mn), Silicon (Si), Aluminum (Al), Magnesium (Mg), Nickel (Ni) and ferrous powder jointly; wherein, the components of the flux core include 20 percent to 45 percent of the villaumite, 4 percent to 13 percent of the carbonate, 4 percent to 15 percent of the oxide, 1 percent to 5 percent of Mn, 1 percent to 3 percent of Si, 3 percent to 8 percent of Al, 3 percent to 7 percent of Mg, 0 percent to 5 percent of Ni and ferrous powder serving as the rest. The invention has the advantages that the defects that the pore sensitivity of the self-shielded flux-cored wire is high and the impact toughness of the deposited metal is not excellent; when the multi-layer welding is carried out, the surface blowhole is not generated, the complete slag coverage is achieved, the slag can be easily detached, the weld can be formed well and the impact toughness of the deposited metal is high and stable; the concentration of the hazardous substances in the welding fume is lowered and the invention is beneficial to the health of the welder.

The low-dust environment-protecting type carbon steel electric welding rod is made up by using reduced ilmenite, rutile, mica, white mud, medium manganese, marble, clay, pyrauxite, feldspar, wollastonite and natural cereal skin as main raw material. Said electric welding rod possesses excellent welding property, high deposition rate, can reduce welding smoke and dust, and is favorable for protecting environment, and its cost is low.

A welding fume collection device and method capable of automatically tracking and positioning welding points. The welding fume collection device includes a tracking control system and a welding fume exhaust pipe. The tracking control system includes a group of photoelectric sensors, an intelligent control unit, and a mechanical drive. The welding smoke collection method of the unit and the mechanical arm is to use the photoelectric sensors installed at different positions on the exhaust mask to sense the visible light, infrared rays or ultraviolet rays emitted by the solder joints, and the distance between the solder joint movement and the photoelectric sensors can be changed. The strength of the welding spot arc sensed by each photoelectric sensor changes, and each photoelectric sensor outputs an electrical signal to the intelligent control unit according to the sensed welding spot arc light intensity, and calculates the direction and direction of the welding spot movement. The distance is controlled by the mechanical transmission unit to drive the mechanical arm to move. The invention has high working efficiency, low energy consumption, low equipment cost, and can automatically realize the tracking of solder joints.

The invention discloses a spot welding machine welding fume purifying device with an environment-friendly function and relates to the technical field of spot welding machine purifying equipment. The spot welding machine welding fume purifying device comprises a bottom plate; a case is fixedly connected to the top of the bottom plate; a motor is fixedly connected to the bottom of the inner wall of the case through a connecting block; an output shaft of the motor is sleeved with a first bevel gear; and a transmission shaft is rotatably connected to the position, located on one side of the motor, at the bottom of the inner wall of the case through a bearing seat. According to the spot welding machine welding fume purifying device with the environment-friendly function, the environmental protection property of a spot welding machine is greatly improved, welding fume discharged by the spot welding machine is well collected and purified in a centralized mode, the situations that the welding fume is directly discharged into air and pollutes the environment around the spot welding machine are prevented, and the situation that workers suck the large amount of welding fume, and thus the physical health of the workers is greatly damaged is well avoided, so that normal spot welding work of the workers is guaranteed, and using of people for the spot welding machine is quite facilitated.

The invention relates to a fume welding and dust removing system for a robot welding work station. The fume welding and dust removing system is used for absorbing fume generated by welded arcing points during filter welding and comprises a movable dust exhaust hood, a dust removing pipeline and a welding fume processer, wherein the dust exhaust hood is arranged above the welded arcing points and covers the welded arcing points; the dust exhaust hood comprises a framework and is provided with an upper end face, a lower end face and side surfaces; the upper end face and the lower end face are respectively provided with end face plates for sealing the upper end face and the lower end face; an exhaust opening is formed in the lower end face; an arc light preventing falling curtain is arranged on the framework for shielding the side surfaces; one end of the dust removing pipeline is connected with the welding fume processor; the other end of the dust removing pipeline is connected with the upper end face of the dust exhaust hood; and when the robot welding work station works, the welding fume processor works, so that negative pressure generates inside the dust exhaust hood, the fume enters the dust exhaust hood through the exhaust opening and is absorbed to the fume processor through the dust removing pipeline for filtering. According to the fume welding and dust removing system disclosed by the invention, the fume generated by welding can be effectively absorbed and filtered and the harm on a human body caused by welding fume is minimized.

The invention discloses a factory building welding exhaust gas purification apparatus. The apparatus comprises a welding fume purifier, a welding fume purifying device is arranged in the welding fumepurifier, a cleaning device is arranged in the welding fume purifying device, a vacuum gas suction and recovery device is arranged below the welding fume purifying device, a universal telescopic gas suction tube device is arranged above the vacuum gas suction and recovery device, a cleaning device is arranged below the side surface of the welding fume purifier, a rotatable connecting short rod isarranged in the universal telescopic gas suction tube, the connecting short rod swings to drive the universal telescopic gas suction tube to move to purify fume, and the gas suction using a gas suction pump makes the universal telescopic gas suction tube return into the welding fume purifier to make the apparatus conveniently used by a user. The apparatus has the advantages of simple structure andstrong practicability.

The invention relates to a preparation method of an air purifying filtering material, and more specifically discloses a preparation method of a filtering material used for welding fume. The preparation method is used for solving a problem of conventional welder anti-dust respirators that adsorption and dedusting performance is poor. The preparation method comprises following steps: 1, medical stone powder is prepared; 2, medical stone nano-grade particles are prepared; 3, surface modification is carried out so as to obtain surface modified particles; 4, heating blending is carried out so as to obtain a high polymeric compound; 5, carbonization is carried out so as to obtain a carbonization product; 6, melt spinning is carried out so as to obtain medical stone functional fiber; 7, catalytic activation modification is carried out so as to obtain catalytic activation modified medical stone fiber; and 8, spunlace moulding is carried out so as to obtain a medical stone functional filtering material which is the filtering material used for welding fume. The filtering material is taken as a dedusting filtering material.

The invention discloses a portable welding fume collecting and processing device which comprises a basic assembly which comprises a box body, an air suction pipe communicating with the box body and extended outside and a storage cavity arranged in the box body, wherein the box body is made of carbon fibers; a portable assembly which comprises straps connected to the box body, a connecting sleeve arranged on the air suction pipe and a handle arranged on the box body, wherein an air collecting hood is arranged at the front end of the air suction pipe; and a collection assembly, wherein the collecting assembly is arranged in the storage cavity. The device is small in size, light in weight and convenient to carry; data detected by the dust detector is transmitted to a database in which a largeamount of experimental data is stored in the detector; after data comparison, the spacing of the optimal rectifying plate hole coincidence degree, the voltage and an electrode plate is obtained, a database transmits the data to a driving system, the driving system executes a command, a point-to-point collecting and processing mode is adopted, welding fume is collected and processed from the source, and the collecting and processing efficiency of the welding fume can reach 90% or above.

The invention discloses a welding fume collecting device and a welding fume collecting method capable of automatically tracking and positioning a welding point. The welding fume collecting device comprises a tracking control system and a welding fume exhaust tube, wherein the tracking control system comprises an image sensor, an intelligent control unit, a mechanical transmission unit and a mechanical arm; the image sensor is connected with the intelligent control unit; the intelligent control unit is connected with the mechanical transmission unit; the mechanical transmission unit is connected with the mechanical arm; and the image sensor is arranged at the end part of the mechanical arm. The welding fume collecting method comprises the following steps of: sensing visible light or infrared rays emitted by the welding point by using the image sensor, wherein the welding point is a light spot in a sensed image; transmitting image information to the intelligent control unit through the image sensor, analyzing and processing the image information through the intelligent control unit, calculating the change direction and distance of a light spot coordinate, and controlling the mechanical transmission unit to drive the mechanical arm to move; and when the light spot coordinate value is the same as the preset point coordinate value, stopping the movement of the mechanical arm. The device and the method have high working efficiency and low energy consumption, and can automatically realize the tracking of the welding point.