42results about How to "Strength reached" patented technology

The invention provides a resistance heating system of ultrahigh-strength steel. The resistance heating system comprises a resistance welding power supply system and a roller assembly line or a drum assembly line, wherein the roller assembly line or the drum assembly line and the resistance welding power supply system are in connection control; and the roller assembly line or the drum assembly line comprises a lower bracket, a lifting frame, an upper-layer roller train, a lower-layer roller train, upper rollers and lower rollers. The roller assembly line or the drum assembly line is arranged to be connected with the resistance welding power supply system, so that replacement of the workload of a 40m ceramic hot rod heating furnace with the 1.5M-3M roller assembly line or the drum assembly line is achieved, the occupied space is small and the investment cost is low. The resistance welding power supply system can carry out power supply connection in different manners according to the production requirements, and can provide different voltage, current, power-on time and pulse quantities; different heating temperatures are provided for different intervals of the roller assembly line or the drum assembly line; a steel plate obtains different metallographic structures to reach the expected intensity; the effect is good; and the efficiency is high.

The invention discloses a carbon-adding hard alloy material and a preparation method thereof. The alloy comprises the following raw materials in parts by weight: 89-91 parts of tungsten carbide, 3.7-4.7 parts of nickel, 0.35-0.45 part of chromium, 0.35-0.45 part of cobalt, 1.0-2.0 parts of paraffin, 2.0-5.0 parts of graphite and the balance aviation gasoline, wherein 0.2-0.35 liter of aviation gasoline is added in per kilogram of the above materials. The hard alloy of the invention has better dry friction property compared with the traditional hard alloy; and the hard alloy has lower production cost, also has good wear resistance, high strength and other properties of the traditional hard alloy, and has the advantages of simple preparation technology, easy operation and the like.

The invention relates to the field of excimer lasers, in particular to a circuit for triggering excimer lasers to generate plasma. It includes a device for triggering the excimer laser and a pulse circuit for driving the excimer laser; the device for triggering the excimer laser includes a signal acquisition module and an electrical signal processing module; the pulse circuit for driving the excimer laser includes a trigger pulse The circuit, the trigger pulse circuit includes a first power supply unit for supplying power to the trigger terminal of the gas laser; the first power supply unit includes a tenth capacitor, a charging power source for charging the tenth capacitor. Therefore, the present invention can ensure that the time when the seed light reaches the excimer laser is synchronized with the discharge of the excimer laser. Therefore, under the interaction of the transistor and the tenth capacitor, the present invention can generate a high-voltage pulse signal with fast leading edge and low jitter for the excimer laser, so as to ensure the working performance of the excimer laser.

A drilling sealing material belongs to sealing materials. The sealing material consists of water 30-40%, ordinary silicon cement 30-40%, sodium bicarbonate 1.4-2%, sodium carbonate 1.5-2%, citric acid 3.0-3.5%, calcium carbonate 8.0-8.5%, bentonite 8.0- 8.5%, 8.0-8.5% gypsum, and 0.10-0.18% polyacrylamide, which can be used after mixing the above substances according to the mass percentage. Sodium carbonate, sodium bicarbonate, and citric acid in this material will quickly react to generate gas in the solution, but in the sol of polyacrylamide and cement slurry, the molecules cannot contact in time, and the molecules permeate through the sol-coated structure to react It takes a certain amount of time; during this time the cement and gypsum also gradually crystallize with the water, and the material gradually thickens until it sets. Advantages: The sol is thin and easy to grout when the material is first formed; 5-7 hours after the slurry is injected into the drill hole, the slurry gradually thickens, the volume continues to expand, and the strength gradually increases, which can be closely bonded to the coal body , and plug the micro-cracks formed in the drilling process, the material is compact as a whole; the materials selected in the present invention are all common materials in the market, and the cost is low.

The invention discloses a high-plasticity and easy-to-be-eliminated extrusion molding agent. The extrusion molding agent is prepared by the following raw materials, by weight: polyvinyl butyral 10-20%, butylcarbitol (diethylene glycol monobutyl ether) 60-70%, cocinic acid (yituomin) 1-5%, DBP (dibutyl phthalate) 1-5% and paraffin 10-15%. The extrusion molding agent provided in the invention provides a pressed shape with a fairly good strength and plasticity. With the extrusion molding agent provided in the invention, qualified rate of products is improved and production period of the extrusion products is shortened.

The invention discloses an environment-friendly rectangular composite plate comprising a surface plate, a bottom plate, and a central layer arranged between the surface plate and the bottom plate. The central layer is a honeycomb paper core. The surface plate and the bottom plate are respectively adhered with the central layer by using glue. The surface plate and the bottom plate both comprise at least one layer of paperboard or paper skin. The central layer also comprises a rectangular frame arranged on the periphery of the honeycomb paper core and glued with the honeycomb paper core. The thickness of the frame is same as that of the honeycomb paper core. According to the invention, the central layer is the honeycomb paper core, and the surface plate and the bottom plate are paper skin or paperboard. The three are all sourced from paper products, such that advantages of light weight and low cost are provided. Wood is not directly used, such that forest resource protection is promoted. The strength of the composite plate reaches that of a wood composite plate or even higher.

The invention discloses a lightweight partition wall block forming machine, a partition wall block and a connection method of the partition wall block. By separating the hopper from the unit, the vibration of the unit does not affect the feeding of the hopper when producing the partition wall block. , can prevent the material in the hopper from being vibrated and cause blockage, so it can be vibrated for a long time to produce thicker outer wall blocks, which are denser and stronger, and do not need to be placed inside the wall blocks The required strength can also be achieved by setting the steel bars. There are track positioning wheels on both sides of the front and rear ends of the frame, which can walk in the track. The partition wall blocks produced are straighter. There is a spacer box at the front end of the frame. The bottom of the release agent box is also provided with a brush roller, which can automatically smear the release agent on the ground when the partition wall block is produced to prevent the partition wall block from sticking to the ground. Compared with the prior art, the present invention not only It saves resources, saves time and labor, and can also be used as exterior wall bricks.