50results about How to "Adjust cooling speed" patented technology

Provided are a cooling method and a cooling device for adjusting the volume of cooling water in two levels for each set of width direction headers when cooling a hot-rolled steel strip and for changing the steel strip cooling velocity in multiple levels using a simple method, the method and device being particularly effective for cooling the lower surface of a steel strip in a narrow space. Spray nozzles (5) are disposed in a row at a specified pitch in the width direction of the steel strip. In order that cooling water can be supplied from different piping systems for spray nozzles (5) that are adjacent in the width direction, the cooling headers (6) are configured so that: two systems are disposed per one set; a jetting valve (7) is installed on each; and individual cooling water jetting / stopping is possible.

The present invention relates to an apparatus and method for manufacturing a fine porous film to be used as a separation film of a secondary battery. The apparatus for manufacturing the fine porous film of the present invention comprises: a T-shaped die (20) for forming a precursor film by extruding a melted resin generated by melting a partially crystalline resin through the front end of a nozzle; a guide roller (50) arranged at a downstream side of the extrusion direction of the T-shaped die (20) so as to move and guide the precursor film (F1) at a predetermined draft ratio; a precursor film cooling means (40) for providing, in the moving direction of the precursor film, a flow of cooling air over either or both of the front and back surfaces of the precursor film so as to cool the precursor film; and a film elongation means for applying a tensile force, in an axial direction or in biaxial directions, to the cooled film while same is passing through the precursor film cooling means (40).

The invention discloses a lipstick tube extrusion cooling device, which comprises an atomization device, an air drying device and a discharging device, wherein the atomization device is arranged on the outlet end of an extruder; the air drying device and the discharging device are arranged on the lower end of the atomization device; the outlet end of the extruder is aslant provided with a discharging plate; the atomization device comprises a longitudinal conveying belt, a supporting seat and a top plate, wherein the longitudinal conveying belt is arranged on the bottom of the discharging plate; the supporting seat supports the longitudinal conveying belt; the top plate is arranged on the upper end of the longitudinal conveying belt; the top plate and a supporting plate are enclosed to forman atomization chamber; the outer side of the top of the top plate is provided with a water tank; the inner side of the top of the top plate is provided with atomization shower nozzles communicated with the water tank; the air drying device comprises a lateral conveying belt arranged on the lower part of the discharging end of the longitudinal conveying belt, and supporting legs used for supporting the lateral conveying belt; the outlet end of the lateral conveying belt is provided with the discharging device. The lipstick tube extrusion cooling device has the advantage of simple structure, an instantaneous cooling effect is realized, and the problem of low cooling efficient of a traditional cooling device is solved.

The invention relates to a steel pipe cooling method, which belongs to the field of steel pipe heat treatment. The technical problem solved by the invention is to provide the steel pipe cooling method which can satisfy the demand for cooling medium and thick-wall steel pipes. The steel pipe cooling method comprises the following steps of placing a steel pipe to be parallel to the liquid level of a liquid cooling medium, dipping part of the steel pipe in the liquid cooling medium, rotating the steel pipe and cooling the steel pipe. The method has the advantages of simple process, simple equipment, low cost and broad application prospects.

The invention belongs to the technical field of preparation of hammer heads widely used in the fields of crushing, pulverizing and the like, in particular to a combined hammer head and a manufacturing process thereof. The combined hammer head comprises a framework and a hammer block, wherein the framework is arranged in the hammer block, and is adjacent to the front end of the hammer block; the framework is a high-chromium iron framework and comprises a frame; the frame is in a circular arc shape and is provided with conical rods; the conical rods are distributed on the circular-arc bottom surface of the frame at equal intervals; and the hammer block is a low-carbon multivariant low alloy steel hammer block. The invention is characterized in that the framework is arranged in the hammer block and is obtained by carrying out integral casting on hypereutectic high-chromium iron; the framework and the hammer block are subject to composite casting; the hammer block adopts low-carbon multivariant low alloy steel, and has higher strength and favorable impact toughness; the abrasion resistant framework has excellent abrasive resistance; and the invention gives full play to the advantages of the two materials, thereby obviously prolonging the service life of the hammer head of a crusher and reducing the equipment maintenance rate; and the process is simple, the production efficiency ishigh, and the economic benefits are considerable.

The invention discloses a refrigeration device suitable for electrical cabinets under high-temperature conditions, which relates to the technical field of refrigeration, and includes a water supply mechanism, a diffuser mechanism, a cooling mechanism, and an air supply mechanism installed in the electrical cabinet, and the diffuser mechanism makes the airflow flow, The cooling mechanism includes a number of water guide plates arranged in the refrigeration box, two adjacent water guide plates are arranged alternately and every two water guide plates are rotatably connected by cooling connecting rods, and one end of the lowermost water guide plate is set There are counterweights to guide the flow of water, and the air supply mechanism realizes multi-angle air supply. The invention uses underground cold water, controls the contact area between air flow and cold water flow, and adjusts the wind direction and speed to cool down the electrical cabinet. It is energy-saving and environmentally friendly, and has a good cooling effect. , high cooling efficiency.

The invention relates to mechanical equipment in the field of metal heat treatment, in particular to an air blast quenching machine for rollers. The air blast quenching machine comprises an air spraying device, two heating devices, an air extracting device and a rotation device, wherein the air spraying device, the heating devices and the rotation device are all mounted and fixedly connected to a horizontal surface on a concrete poured foundation base; the air extracting device is mounted and fixedly connected into a groove in the foundation base; the heating devices are arranged on two sides of the rotation device symmetrically; and a workpiece roller is arranged on the rotation device. The air blast quenching machine adopts four-carrier roller synchronous constant-speed mobile rotation, so that the heating uniformity and the quenching quality are improved; due to combined function of the air spraying device and the air extracting device, the cooling speed can be accelerated, and the work environment can be improved; and as both the air spraying device and the heating devices are arranged on and connected with a link mechanism, mobile starting and stopping can be realized, and spray head distances can be adjusted fast.