34results about How to "Reduce oxidation corrosion" patented technology

The invention provides a heater multi-pipe heat conducting type shell-tube water storage bearing heat interchanger and a manufacturing technology thereof. The heat interchanger comprises multiple round cold water pipes; head external blocking plates are welded at two ends of the round cold water pipes; heater pipe connecting blocking plates are welded in pipe openings at two ends of the round cold water pipes; round heater pipe connecting openings are formed on the heating pipe connecting blocking plates; pipe cavities are directly welded and communicated by the adjacent round cold water pipes through straight round cold water communicating pipes or butt-welded wall pulling pipes; at least one round heater pipe is penetrated into the cavity of each round cold water pipe; pipe openings of two ends of each round heater pipe are in welded connection with connecting openings of the round heater pipe on the heater pipe connecting blocking plates; round heater communicating pipes are in welded communication with the heater pipe connecting blocking plates or the round heater communicating pipes are sequentially welded and communicated with the head external blocking plates and are communicated with a thermal fluid shunting cavity to form a thermal fluid circulated heat transmission passage. The heat interchanging structure is more scientific and reasonable; the heat transmission area is improved by 55%-100%; the heat conduction rate is accelerated; the heat exchanging effect is excellent. The welding joints of the communicating pipes among the cavities are difficultly subjected to water leakage.

The invention relates to a remote digital ultrasonic / variable frequency antiscale and descaling equipment, which comprises an inductance power, a digital module, a digital LCD, an ultrasonic power, a cable, a transducer, a protecting cover, a ring piezoelectric ceramic chip, a metallic amplitude-variable rod, a main body, a flange, a metallic energy collecting block, a pipeline, a pipeline front flange, a rear flange, and an inductance coil. The ultrasonic-wave main body has an ideal inclined angle range of 30 to 60 degrees to the pipeline, and is welded on the pipeline, the transmission of the ultrasonic is same with the direction of flow of the fluid, this is not only helpful to the transmission of the ultrasonic and is not liable to produce a standing wave and a reflection wave, but also reduces the repeated impact of the cavitation effect of the ultrasonic to the pipeline, so the service life of the pipeline is prolonged. Multiple turns of helical wires connected with the variable frequency circuit board are wound on the industrial pipeline. The invention utilizes the cavitation effect of the ultrasonic to act on the dirt on the inner wall of the pipeline with a lateral wave and a vertical wave, so as to descale equipment and the pipeline at long and short distance. The invention utilizes variable frequency electromagnetic field to perform variable frequency antiscale and descaling treatment on the pipeline fluid remotely. The equipment can remove scale deposit in advance, and can prevent scaling, as a result long pipes will have no scale, thus the smoothness of the whole pipeline is ensured. The invention saves water resource, improves the equipment efficiency, reduces the maintenance cost and prolongs the service life of the equipment, thus digital controlling and automatic protection can be realized.

The invention includes a catalysed membrane and membrane electrode assembly. The membrane and membrane electrode assembly comprise an ion-conducting membrane component comprising an ion-conducting membrane, an anode catalyst layer, and a cathode catalyst layer. The anode catalyst layer comprises a first electrocatalyst component comprising a first platinum-containing electrocatalyst and a first carbon support. The first carbon support supports the first platinum-containing electrocatalyst, and the electrochemical platinum surface area in the anode catalyst layer is 5-100 cm2Pt / cm2 of the geometric electrode area of the anode catalyst layer. The cathode catalyst layer comprises a second electrocatalyst component and a second oxygen evolution reaction electrocatalyst. The second electrocatalyst component comprises a second platinum-containing electrocatalyst and a second carbon support, wherein the second carbon support supports the second platinum-containing electrocatalyst component.

The invention discloses an injection molded part for an automobile shift line connection assembly with an anti-falling structure, which relates to the technical field of automobiles; in order to solve the problem of movement after shifting; it specifically includes a casing, a handle assembly, a gear assembly, a movable assembly and reset assembly, the gear assembly includes an indicator label and a first fixed block, a rectangular through hole is opened on the outer wall of the top of the housing, a boss is provided on the bottom outer wall of the first fixed block, and the outer wall of the boss is fixedly connected to the inner wall of the rectangular through hole, The outer wall of the bottom of the first fixed block is attached to the outer wall of the top of the housing, and the outer wall of the bottom of the indicator label is connected to the outer wall of the top of the first fixed block by bolts. The inner wall of the first fixed block is provided with a U-shaped groove, and the inner wall of the U-shaped groove is fixedly connected with an anti-wear sleeve. The bottom outer wall of the boss is fixedly connected with a stop block, and the bottom outer wall of the stop block is provided with a wave-shaped card slot. The present invention can realize the fixation of related components after gear shifting by setting the stop block and relying on the wave-shaped slot on the outer wall of the bottom of the stop block.

The invention discloses an industrial device equipped with a sensor and a weighing method, belonging to the technical field of industrial devices. An industrial device with a sensor, including a sensor, and a base, the base is fixedly connected with a support block, the sensor is fixedly connected to the upper end of the support block, the base is slidably connected with a placement platform, and the support block is equipped with A chute, a sliding plate is slidably connected in the chute, a reversing gear is rotatably connected in the chute, and transmission teeth matching the reversing gear are arranged on the sliding plate, and both sides of the placing table are Multiple sets of fixed teeth are provided, and the fixed teeth are matched with the reversing gear; in the present invention, the protection of the sensor when the weight is too large is realized by placing the table, the base, the sliding plate, the fixed teeth, and the reversing gear. The first air hole, the transition cavity, the second air hole, the filter block, etc. improve the detection accuracy of the sensor and prolong the service life of the sensor.

The invention relates to a boron-containing high-silicon bainite wear-resistant corrosion-resistant alloy and a manufacturing method thereof. The alloy comprises the following chemical components in percentage by weight: 0.3-0.6% of C, 1.6-2.6% of Si, 0.6-1.0% of Mn, 0.6-4.0% of Cr, 0.3-0.5% of Mo, 0.3-0.5% of Ni, 0.3-0.5% of Cu, 0.1-0.3% of Ti, 0.05-0.1% of B, 0.05-0.15% of Ce, 0.05-0.15% of Nb, less than 0.04% of P, less than 0.04% of S and the balance of Fe. The manufacturing method comprises the following steps: carrying out electric-furnace smelting, carrying out secondary aluminum insertion deoxidization, putting on the bottom of a casting ladle to form a casting, austenizing the casting at 850-950 DEG C, keeping the temperature for some time, putting in a salt bath at 200-260 DEG C to carry out primary isothermal quenching, keeping the temperature for 5-10 minutes, carrying out secondary isothermal quenching in a salt bath at 260-400 DEG C, keeping the temperature for 0.5-4 hours, and cooling in air to obtain the wear-resistant corrosion-resistant alloy of which the austenite-bainite base is distributed with boride. The alloy is low in preparation cost and suitable for marine silt erosion and corrosion environments, has favorable comprehensive properties of toughness, wear resistance and corrosion resistance, and can be used for dredger cutter teeth, slurry pipelines, centrifugal-pump impellers, blades and the like.

The invention discloses a lead-free soft soldering. Calculated by weight percentage, the lead-free soft soldering consists of following compositions: 0.1 to 3.9 per cent of Al, 0.0001 to 0.5 per cent of Se and rest of Sn. The method of manufacturing the invention is: (a) after refined tin is added into a plumbago pot to be melted, temperature rises to 1100 DEG C. refined copper is added and evenly mixed. The refined tin and the refined copper are melted to be liquid tin copper alloy. The liquid tin and copper alloy becomes the alloy ingot of tin and copper after standing for 30 minutes; (b) the refined Ag is added and melted again and the temperature rises to above 1600 DEG C. Pure nickel is added and melted. The liquid Ag and nickel becomes the alloy ingot of Ag and selenium after standing for 30 minutes; (c) with the refined tin added into and melted and the temperature rising to above 600 to 1000 DEG C, covering agent is added to isolate the liquid level of tin from oxygen in the air. Pure selenium is added and melted. The liquid tin and selenium becomes the alloy ingot of tin and selenium after standing for 30 minutes; (d) three gold ingots, Ga or Cu and the rest of tin and put into a stainless steel kettle to be melted according to the required formulation, which can be made into a tin wire, a tin bar and a tin ball.