35results about How to "Make sure to fill" patented technology

The invention discloses a SiC / epoxy epoxy resin composite material, wherein raw material components based on weight percentages are as follows: 75-85 wt% of SiC particles, 15-25 wt% of organic component and coupling agent with a mass of 1.5-2.5% of the organic component; the particle size distributions of the SiC particles are as follows: 500-600 microns taking up 65-75 wt%, 100-150 microns taking up 2-30 wt% and 30-40 microns taking up 5-10wt%; the organic component is composed of epoxy resin and curing agent; the mass ratio of the epoxy resin to the curing agent is 3: 1. A preparation method for pump component with SiC / epoxy epoxy resin composite material, comprising the following steps: (1), heating and stirring in vacuum way; (2), pressure pouring; (3), vacuum vibrating and forming; (4), heating and curing. The invention is characterized by simple technology and low production cost. The prepared SiC / epoxy epoxy resin composite material pump component can resist abrasion and corrosion.

The invention discloses high-strength directly aluminizing water-based base coat and a preparation method and application of the high-strength directly aluminizing water-based base coat. The directly aluminizing water-based base coat comprises the following components in parts by mass: 50-80 parts of water-based resin, 6-16 parts of cosolvents, 0.1-1 part of flatting agents, 0.05-0.20 part of antifoaming agents, 0.05-0.5 part of slipping agents, 1-6 parts of hardening agents, 0.1-0.3 part of pH regulator, 0.2-2 parts of thickening agents, 0-2 parts of crosslinking agents and 6.2-36.2 parts of water. With good closure, the direct aluminizing water-based base coat disclosed by the invention guarantees the filling of micropores in the paper surface as well as the separation of water vapor; due to the characteristic of flexibility, the bending resistance of paper is realized; the viscosity resistance ensures that the film rolls are not bonded with each other after base coating on the aluminizing body paper; moreover, by adjusting the leveling property of the selected resin system and the coating, the base coat has high aluminizing metal texture.

The invention relates to a method for changing the volume of a crack and its application. The method includes the following steps that 1, the characteristic parameter of a reservoir is evaluated, wherein the characteristic parameter includes a brittleness index, a natural fracture development degree and a horizontal stress difference coefficient; 2, the type and use amount of an adopted propping agent is determined through simulation software; 3, liquid of the propping agent determined in the step 2 is used for fracturing transformation of the reservoir. The provided method for changing the volume of the crack is reasonable and simple in design, calculation and operation are easy to conduct, the changed volume of the crack can be effectively improved, the filling degree of cracks differentin scales, the yield-increasing effect is improved to the greatest extent after pressing, and the decline rate of yield is delayed.

The invention discloses a sand casting core-making process in the technical field of sand core manufacturing. The specific steps of the process are as follows: Step 1: Stir and mix the casting sand and binder evenly and thoroughly; Casting sand is injected into the mold. Step 3: Start the compaction device to compact the casting sand in the mold. Step 4: After the compaction is completed, take out the sand core and dry it; by setting the rotating disc, the two-way rack drives the rotating disc when it moves up and down Synchronous movement, the rotating disc will rotate along the inner threaded pipe while moving up and down, so as to drive the compaction hammer to rotate while moving up and down. The casting sand has a certain impact force and plays the role of compaction. When the compaction hammer is lowered, it rotates and twists and compacts the casting sand falling into the mold. On the one hand, the casting sand is compacted, and on the other hand, the casting sand is Squeeze all around to ensure that the casting sand can fill the corners of the mold.

The invention discloses a detection method and a detection structure for grouting density of prefabricated parts. The detection method comprises the following steps: providing at least one first prefabricated part and a second prefabricated part, preserving a grouting construction gap between the first prefabricated part and the second prefabricated part, and forming opposite grouting interfaces between the first prefabricated part and the second prefabricated part; arranging prefabrication testing points on the grouting interfaces of the first prefabricated part or / and the second prefabricated part, and connecting the prefabrication testing points with a signal receiver; grouting size into the grouting construction gap; when the size in the grouting construction gap triggers the prefabrication testing points, transmitting signals to the signal receivers from the prefabrication testing points; based on the signals transmitted from the prefabrication testing points, judging the grouting density degree of the grouting construction gap. As the prefabrication testing points are arranged on the grouting interfaces, the density degree of size grouting in the grouting construction gap can be detected, the size can be completely filled without bubble, and the grouting connection quality between the prefabricated parts can be ensured.

A seeding machine (10) is described. The seeding machine (10) is adapted to be moved over soil in a planting operation to plant seed, the machine (10) comprising: a row unit (24) having a trench opener (42), seed meter (36, 136), and a motor (66, 140) to drive the seed meter (36, 136); and a control system (80) including a seed sensor (100, 102) associated with the seed meter (36, 136). In order to minimize waste of seed during planting operation it is proposed to provide the machine (10) with a control system (80) which is adapted to operate the motor (66, 140) prior to operation of the seeding machine (10) to plant seed, to drive the seed meter (36, 136) in a priming operation to fill the seed meter (36, 136) with seed and to stop the motor (66, 140) in response to seed being detected by the associated seed sensor (100, 102) whereby when beginning a planting operation moving the seeding machine (10) over a field, seed is immediately discharged from the seed meter (36, 136).

The invention relates to the field of ring die drilling equipment, in particular to a drill and backfill type ring die drilling equipment, which comprises two semicircular and detachably connected clamping rings, the ring die is clamped between the two clamping rings In between, the clamping ring is placed on the roller frame of the ring die, the outer side wall of the clamping ring is provided with a plurality of accommodating holes, the accommodating holes are provided with filling components, the filling components and the material holes on the ring die are set in one-to-one correspondence, and the filling components It includes an electromagnet arranged at the open end of the accommodating hole, the electromagnet is electrically connected to the control system, a magnetic block for repulsing the electromagnet slides in the accommodating hole, and a reset pressure is supported between the magnetic block and the closed end of the accommodating hole. The magnetic block is provided with an air guide tube, the air guide tube slides through the inner wall of the clamp ring and is provided with a sleeve seat, a balloon is sleeved on the sleeve seat, one end of the air guide tube communicates with the corresponding accommodating hole, and the other end is connected with the corresponding balloon Connected. The present application has the advantage of reducing the possibility that the worker needs to clean up the drill chips in the feed hole of the ring die subsequently.