35results about How to "Shorten pressurization time" patented technology

The invention provides a three component adhesive composite which comprises a first component containing one or a plurality of polylols, a second component containing one or a plurality of isocyanates, and a third component containing one or a plurality of common polyurethane catalysts or modified catalysts thereof. The invention realizes the expected adhesive curing speed and the expected adhering strength at the temperature with wide range by adjusting the adding proportion of the third component according to different applications.

A process for pressurizing bulk material in a hopper; wherein the hopper is configured as a lock hopper (29) containing a bulk material, a source of pressurized gas, lines (22, 26, 28) to convey the pressurized gas from the source to one or more inlets (30) of the lock hopper, a valve arranged in the lines, wherein the opening position of said valve (34, 35) is controlled to provide pressurizing gas to the lock hopper at a preset constant gas volume flow rate.

While a workpiece is heated and pressed by one of a pair of high-pressure vessels, a workpiece being pressed by the other high-pressure vessel is placed in a heated state. In the reducing process after termination of heating and pressing treatment of the workpiece by one high-pressure vessel, both the high-pressure vessels are placed in communication, and the pressure medium gas released from one high-pressure vessel is poured into the other high-pressure vessel. After pressures of both the high-pressure vessels have assumed a nearly balanced state, the pressure medium gas is sucked out of one high-pressure vessel by a compressor and pressed, and is poured into the other high-pressure vessel, and the workpiece is heated and pressed by the other high-pressure vessel. By the method as described, considerable shortening of cycle time of HIP treatment is achieved, and the HIP treatment can be carried out with high efficiency.

The invention provides a supercritical fluid foaming polyolefin material and a preparing method thereof. The supercritical fluid foaming polyolefin material is prepared through the following steps that a polyolefin sheet is prepared, and the melting point of the polyolefin sheet is Tm; radiation crosslinking is carried out on the polyolefin sheet; the crosslinked polyolefin sheet is put into a pressure container for high-pressure nitrogen impregnation, and the impregnation temperature T1 is equal to Tm+(30-120) DEG C; low-temperature heating foaming is carried out, and the foaming temperature T3 is equal to Tm+(20-50) DEG C, and is smaller than T1. By the adoption of the technical scheme, the requirement for material crystallinity is avoided, the time of reaching a dissolution saturation state of gas is greatly shortened, efficiency is improved, and the foaming material which is fine and uniform in bubble, low in density, high in mechanical strength and regular in shape can be obtained.

A process for pressurizing bulk material in an apparatus for pressurizing bulk material in a hopper; wherein the hopper is configured as a lock hopper containing a bulk material, wherein the apparatus comprises a source of pressurized gas, lines to convey the pressurized gas from the source of pressurized gas to one or more inlets of the lock hopper, a valve arrangement arranged in the lines, wherein the process is characterized in that said valve arrangement comprises at least two valves arranged in parallel, each valve being connected to a downstream Laval tuyere, and in that said valves are controlled to open in an operating sequence to provide pressurizing gas with an adjusted gas flow rate to the lock hopper.

The invention discloses a vacuum liquid pressure impregnation (VLPI) device and an impregnation method. The device comprises a paint storage tank, a paint soaking tank, a vacuum set, an external pressurizing assembly, an evacuating assembly, and an internal circulation assembly. The vacuum set and the evacuating assembly are both connected to the paint soaking tank. The paint storage tank is connected to the paint soaking tank through the external pressurizing assembly. One end of the internal circulation assembly is connected to the paint storage tank, and the other end is connected to the external pressurizing assembly. The method comprises the following steps: step one, carrying out vacuum dehumidifying; step two, performing vacuum paint soaking; step three, carrying out liquid pressure impregnation; step four, dripping paint; and step five, taking out workpiece. The provided device and method have the advantages that the pressure increasing is rapid and stable, the impregnation effect and product quality are high, and the paint filtering frequency is reduced.

A pressurizable sample system includes a microplate having a planar plate surface and several sample wells. Each sample well has a flange positioned circumferentially around an outer surface of the sample well and against the planar plate surface. The sample system further includes a capping plate with a planar cap surface and several caps projecting from the planar cap surface. Each cap has a geometrical configuration in complementary correspondence with the configuration of the sample well.

The invention relates to discloses self control gas liquid dual purpose leak-detector. It includes air source, pressure adjusting unit, differential pressure test unit, control unit connected with the pressure adjusting unit set adjusting valve and differential pressure test unit includes differential pressure transducer, filter, pressure protective valve, prove, and standard parts. The probe is gas liquid dual purpose detecting device. The leak detector of the invention can be used to detect gas or liquid leakage to realize one machine has dual purpose.

A method for decreasing the power of hydraulic system for multi-layer hydraulic press used to produce raw boards features that the hydraulic oil source for board loading and unloading machines is introduced to the closing and pressing procedures of hot press, resulting in high closing and pressing speed, low capacity of hydraulic system, and low energy consumption.

An asphalt pavement pore water pressure simulation test device comprises at least two pressure vessels (63), each of which is provided with an asphalt concrete test piece (71); and an open container (62). Adhesive (101) is filled in between the bottom of the asphalt concrete test piece (71) and an open annular portion of the open container (62), and the side wall of the asphalt concrete test piece (71) is coated with the adhesive (101). The side wall of the pressure vessel (63) is provided with a first pressure sensor (52) for measuring the external water pressure of the asphalt concrete piece (71). The side wall of the open container (62) is provided with a second pressure sensor (53) for measuring the water pressure at the bottom of the asphalt concrete piece (71). Each open container (62) communicates through a pipe (83) which passes through the side wall of each pressure vessel (63). In the test method of the device, the test pieces (71) in each pressure vessel (63) are sequentially loaded by using a control flow which meets different wheel load characteristics, which can achieve the directional movement of the pore water, and the dynamic response of water pressure in asphalt concrete pores can be tested under the effect of the dynamically changing external water pressure.