49results about How to "Consistent workmanship" patented technology

The invention provides a production method of a multicolor pattern color steel plate. For the once transfer printing, on one hand, a PLC (programmable logic controller) control module in a servo control system is used for computing the theoretical roller surface linear velocity of each roller in a roll coater set by acquiring the technical velocity and the rotation velocity of each roller in the roll coater set, and enables the theoretical roll surface linear velocity to be accordant with the technical rotation velocity; and on the other hand, a servo control module with a coder acquires the practical roller surface linear velocity of each roller in the roll coater set, and inputs the practical roller surface linear velocity into the PLC control module, so that a PLC control system can be used for comparing the practical roller surface linear velocity with the theoretical roller surface linear velocity, and adjusting the current frequency till the practical roller surface linear velocity is accordant with the theoretical roller surface linear velocity. According to the control method, the practical roller surface linear velocity is adjusted to be accordant with the theoretical roller surface linear velocity, and the theoretical roller surface linear velocity is adjusted to be accordant with the technical velocity, so that the practical roller surface linear velocity is adjusted to be accordant with the technical velocity, and furthermore, the adjustment by stopping a production line does not need in the process of production, so that the production efficiency can be improved.

The invention provides a production line of a multi-color patterned steel plate. On one hand, a PLC (programmable logic controller) control module in a servo control system is used for collecting the process speed and the rotating speed of every roller of a roller coating unit, calculating the theoretical linear speed of the surface of every roller in the roller coating unit and making the theoretical linear speed of the roller surfaces identical to the process speed; on the other hand, the actual linear speed of the surface of every roller in the rolling coating unit is collected by a servo control module with an encoder, the signal of the actual linear speed of the surface of every roller is input into the PLC control system, the actual linear speed of the surface of every roller is compared with the theoretical linear speed of the surface of every roller through the PLC control system, and the current frequency is adjusted until the actual linear speed of the surface of every roller is identical to the theoretical linear speed of the surface of every roller. By adopting the control method, the actual linear speed of the surface of every roller can be ensured to be identical to the process speed, stoppage is not needed in the production process for adjustment, and the production efficiency is improved. Moreover, a steel strip is subject to pre-transfer treatment in the production method in order to improve the adhesion between a coating and the surface of the steel strip and the moldability of the steel strip after printing.

The invention provides a production method of a graph code steel plate integrating roller painting printing and silk-screen printing into a whole. The silk-screen printing and the roller painting printing are combined. Not only can an accurate grounding decorative pattern be obtained, but also a printing layer which is thick, solid and strong in third dimension can be obtained. Simultaneously, a servo control system which controls the rotating speed of rollers in a roller painting equipment assembly and controls the starting time is additionally arranged in a roller painting segment, and thereby the actual roller surface linear speed is guaranteed to be consistent with the technology rotating speed. Then line-stop adjustment is not needed in the production process, and the production efficiency is improved.

The invention provides a directional freezing method for continuously producing polysilicon ingots, relating to an uniform polycrystal material which takes material or shape as characteristics and possesses of a certain structure. The invention provides a directional freezing method for continuously mass production of polysilicon ingots in the process of producing solar energy-level polysilicon by metal silicon in the metallurgy process and a device adopting the method. Empty graphite molds are arranged according to the axial space order and driven to move forward by a furnace vehicle, and the empty graphite molds are preheated in the preheating area; liquid silicon undergoing melt refining is put in the empty graphite molds after preheating; the liquid silicon is kept warm in a high-temperature area of a hearth and enters an intermediate-temperature area; from the high-temperature area to the intermediate-temperature area, the liquid silicon are gradually directionally frozen in graphite molds; frozen silicon is cooled down to room temperature below a revolving track protective cover in the graphite molds to obtain directionally frozen polysilicon ingots. The directional freezing continuous track furnace for continuously producing polysilicon ingots is provided with a furnace body, a furnace hearth, a furnace vehicle track, a furnace vehicle, a front auxiliary cart, a back auxiliary cart, a revolving track, a propelling device and a power supply and temperature control system.

The present invention firstly provides a special-shaped rail, which includes a rail head 11 , a rail waist 12 and a rail bottom 13 , and the rail also includes an arch 14 protruding from the surface of the rail. The present invention also correspondingly provides a rail glued insulated joint, the insulated joint comprising two series-connected special-shaped steel rails as described above. The glued insulated joint provided by the present invention can prevent large rail gaps from appearing at the junction of two steel rails in series, and can greatly reduce the possibility of failure of the glued insulated joint of the rails due to temperature stress and impact force of the train. Small. The glued insulated joint provided by the invention can fully resist the temperature stress change of the seamless line and the impact force generated during the operation of the train, and meets the development requirement of the cross-interval seamless line.

The invention provides a dry film sticking machine and a film sticking method thereof. The dry film sticking machine includes a vacuum pressure sensor (3), a time relay (4), and a PLC (7). When the vacuum degree in the film cavity (5) reaches a specific value SP1, the vacuum pressure sensor (3) transmits the vacuum degree signal SP1 to the PLC (7) and the time relay (4), and triggers the time relay (4) to start counting down, PLC (7) controls the film sticking device to start film sticking; the time relay (4) transmits a signal T to PLC (7) when the countdown ends; when PLC (7) receives the signal T, it controls the film sticking device to finish sticking the film and opens the film sticking cavity (5) . By using the time relay in the dry film sticking machine and dry film sticking work instead of manual timing to directly control the film sticking process time of the machine, the labor cost can be greatly reduced. At the same time, using the time relay to control the time can avoid errors and make the control more accurate than manually pinching the watch. Higher precision ensures that the process of the film laminating machine is consistent, and different process time settings can be made according to the characteristics of different materials.

The invention provides a combined skirting line which comprises a strip-type skirting line plate and a batten plate. The skirting line plate is attached to a wall and fixedly connected with the wall, and the batten plate is fixedly connected with the skirting line plate, attached to a floor but not fixedly connected with the floor. The batten plate can effectively cover the gap between the floor and the wall and combine the floor with the wall, the floor can freely expand and contract in the direction parallel to a floor plane without limitation of the batten plate of the skirting line when changing in volume due to deformation caused by wet swelling and dry shrinkage as the batten plate is not fixedly connected with the floor, the floor can be effectively prevented from locally arching or breaking away from coverage of the skirting line, and damage to the floor or the skirting line and the like caused by relative stress generated between the floor and the skirting line can be effectively avoided.

The invention discloses a PVDF fluorocarbon powder coating and a preparation method thereof. The PVDF fluorocarbon powder coating comprises the following materials: ultra-fine PVDF resin, auxiliary solid resin, a pigment and an auxiliary agent; the PVDF fluorocarbon powder coating is characterized in that the weight ratio of the ultra-fine PVDF resin to the auxiliary solid resin is 70:30, the auxiliary solid resin comprises acrylic resin and alicyclic epoxy resin, wherein the weight ratio of the acrylic resin to the alicyclic epoxy resin in the auxiliary solid resin is (5:25)-(25:5); and the preparation method comprises the following steps: (1) dispersing and mixing the auxiliary solid resin and the pigment at a high speed and performing rubbing to generate heat; (2) adding the ultra-finePVDF resin, performing high-speed dispersion and mixing continuously, and performing rubbing to generate heat; (3) performing melt extrusion, performing cooling, performing drying, and performing pressure-roller cutting; (4) spraying liquid nitrogen and performing freezing; (5) performing crushing, and in the crushing process, performing freezing by using liquid nitrogen; (6) classifying powder; (7) collecting qualified powder, adding an adhesion accelerator and a nano modifier auxiliary agent, and performing spheroidization and loosening treatment; and (8) screening powder which meets a standard. According to the technical scheme, a problem that the PVDF resin is plasticized is avoided, and therefore the PVDF resin and the acrylic resin are mixed uniformly.