40results about How to "Reduce crush strength" patented technology

The invention discloses petroleum industry well drilling working underground tool. It is made up of joint, hanging plate, end cap, shunting rebel tool, impeller, shaft, cover, gland, rotor, stator, identity, and ball bearing. The invention is connected to the up of the drilling bit. While drilling, part of the drilling fluid drive impeller to make the rotor rotate by shunting rebel tool. When the flow passage of the rotor and stator are sealed, its area is the minimum. When the flow passages are circulated, the area is the maximum. High pressure pulsation jetting is formed at lower reaches to improve drilling speed. The other part of the drill fluid pass through the shunting hole to prevent drilling fluid from interrupting caused by impeller blocking to reduce tool application risk.

The invention provides a method for preparing target-used Ru powder and relates to the technical field of precious metal powder production. The method for preparing the target-used Ru powder comprises the steps as follows; 1) solvation, 2) precipitation, 3) centrifugal filtration, 4) drying, 5) crushing, 6) calcination, 7) reduction and 8) powder preparation. According to the method, oxidation reaction is performed by means of chlorine gas to oxidize Ru (III) in a solution into Ru (IV), simultaneously, the concentration of Ru is controlled in a range of 45-55 g/L, the concentration of hydrochloric acid is controlled in a range of 8-12 mol/L, the oxidizing temperature is controlled in a range of 90-100 DEG C, and the mixing speed is 60-90 revolutions/min, so that 99.9% of (NH4)2RuCl6(IV) in the solution can be precipitated, the (NH4)2RuCl6(IV) is separated from impurities, and the purity of the (NH4)2RuCl6(IV) is improved.

The invention relates to a portable detachable ultrasonic vibration drilling machine. The portable detachable ultrasonic vibration drilling machine comprises a slewing mechanism, a feeding mechanism, a supporting mechanism, a hoisting mechanism and an ultrasonic vibrator, wherein the slewing mechanism comprises a drill rod and a drill bit, and the drill bit can conduct slewing drilling; one end of the drill rod is connected with the drill bit, and the other end of the drill rod is sequentially connected with a faucet annular shell, the ultrasonic vibrator and a driving device; and the ultrasonic vibrator is flexibly connected with the driving device, an insulating shell is arranged outside the ultrasonic vibrator, and a plurality of annular piezoelectric ceramic pieces, a plurality of annular electrode pieces and a conductive channel are arranged in the ultrasonic vibrator. The invention further discloses a drilling method using the drilling machine. According to the portable detachable ultrasonic vibration drilling machine and the drilling method, during normal slewing vibration drilling, ultrasonic frequency vibration force generated by piezoelectric ceramic acts on rock through an ultrasonic vibration mechanism, the hole forming depth of the drilling machine is increased, and the service life of the drill bit is prolonged; and the detachable structural design is adopted, the weight of the mountain drilling machine is greatly reduced, the structure is simple, and mounting, dismounting and moving are easy.

The invention discloses degradable plant oil-based lubricating oil and a preparation method thereof. The degradable plant oil-based lubricating oil which comprises modification materials such as nano cerium oxide is synthesized from raw materials such as camellia oil, sesame oil, nano cerium oxide, nano aluminum borate, sodium alcohol ether sulfate (AES) and ion exchange resin through modification methods such as magnetic stirring, TDI (toluene diisocynate) and microwave treatment and together with mixed plant oil.

The invention discloses an impurity removal device for sound insulation glass production and a using method thereof, and relates to the technical field of glass processing. The impurity removal device comprises a mounting base plate, a smashing and iron removing mechanism, a drying mechanism and a heating mechanism, the smashing and iron removing mechanism comprises a smashing box fixedly arranged at the top of the mounting base plate, a first motor is fixed to the back face of the smashing box, the output end of the first motor extends into the smashing box and is fixedly provided with a first smashing wheel, a second motor is fixedly arranged on the back face of the smashing box, the output end of the second motor extends into the smashing box and is fixedly provided with a second smashing wheel, and a protective pad is fixedly arranged in the smashing box. Through the arrangement of the smashing and iron removing mechanism, third smashing wheels drive a screening plate to shake while crushing raw materials, so that scrap iron in the raw materials is more easily adsorbed by electromagnets, the iron removing efficiency is ensured, meanwhile, the shaking screening plate realizes automatic discharging, and operation of users is convenient.

The invention discloses a nano modified material contained plant oil based lubricating oil preparation method. According to the method, plant oil synthesized lubricating oil which contains modified materials such as nano thorium nitrate is prepared from castor oil, nano thorium oxide, nano zinc oxide, surfactant sodium alkyl sulfate, ion exchange resin and the like by modification means of acid treatment, coupling, magnetic stirring, microwave treatment and the like.

The invention discloses an energy absorbing type nut and an automobile. The energy absorbing type nut comprises a cover body, a locking part and a shell; a locking cavity penetrating through the locking part in an axial direction is formed in the locking part and is connected with a stud or a bolt; the cover body seals one end of the locking cavity; the cover body is fixedly connected with the locking part, so that a nut main body can be formed; the shell sleeves the outer side face of the nut main body and is fixedly connected with the nut main body; a first cavity is formed between the shelland the outer side face of the nut main body; and the shell can collapse and deform under the action of an external force. According to the energy absorbing type nut and the automobile of the invention, the first cavity and the shell capable of being deformed towards the first cavity are adopted, so that the energy absorbing type nut can be formed; when the nut is squeezed, the contact area of the nut during squeezing can be increased; squeezing strength and the penetrating capacity of the stud are reduced; the short circuit and power failure of the automobile caused by direct contact betweenthe electrified stud and an automobile body structure in the squeezing process are avoided; and therefore, safety is high, and user experience is improved.

An abbreviated, energy efficient and manipulative process and recipe using a novel binder-combination, to custom-make shaped TS-1 product wherein, their physico-chemical attributes can be engineered, variegated or optimized independent of one another, according to specific stipulations for diverse catalytic reactions that employ them.

The invention relates to the technical field of pearl cultivation, in particular to a novel method for cultivating large free pearls by pinctada maxima. The novel method mainly comprises the following steps of: cutting off 30-40% of retractor of pinctada maxima pearl cultivating shells, reducing the extrusion strength of the retractor on pearl nucleuses, implanting only one perfect circular pearl nucleus at a left bag nucleus position for the first nucleus implantation, and during the second and third nucleus implantation, implanting one pearl nucleus at the left bag nucleus position and a right bag nucleus position respectively. The pinctada maxima belongs to rare protected species, in order to make full use of the pearl cultivation potential of the pinctada maxima, nucleus implantation is carried out three times in total, and meanwhile, the diameter of harvested pearls is 2.0-3.0 mm larger than that of pearls obtained in the previous step every time nucleus implantation is added; and by adopting the nucleus implantation cultivation method, the pearl cultivation capacity of the pinctada maxima is utilized to the maximum extent, the survival rate, the nucleus remaining rate and the superior pearl rate of the pinctada maxima are increased, and large free pearl industrial cultivation of the pinctada maxima can be achieved.

The invention discloses a hemp straw breaking mechanism, which belongs to the technical field of finished product machinery, and comprises a frame (1), a bumper pin (2), rollers (3) and a retaining spring (4). The frame (1) is arranged at the outer side of the mechanism, the bumper pin (2) is arranged between the rollers (3), and the rollers (3) are arranged inside the frame (1) and driven by a roller, a roller shaft and a driving gear. The hemp straw breaking mechanism that is provided by the invention feeds retted hemp straws into the mechanism, and leads the rollers of the straw breaking mechanism to squeeze straw bar cores into small woody crumbs that have easier bast separation. The hemp straw breaking mechanism can be widely applied to the peel and rod separation process of hemp crops, overcome the machine blockage and entwinement phenomenon in traditional straw breaking processes, correspondingly avoid consequent frequent vehicle stopping, and simultaneously improve processing efficiency and finished product quality.