6results about How to "Improve cost competitiveness" patented technology

The invention relates to the technical field of degradable plastics, in particular to a flame-retardant biodegradable plastic and a preparation method and application thereof.The flame-retardant biodegradable plastic is prepared by melting and mixing polylactic acid, poly (adipic acid) / butylene terephthalate, plasticized starch, inorganic filler, an anti-dripping agent, a lubricant, an antioxidant and a chain extender; the flame-retardant biodegradable plastic with the advantages of good compatibility, good temperature resistance, good toughness, good flame-retardant effect and the like is obtained by melting and mixing the raw materials in the specific formula through specific process steps, a feeding sequence and the processing temperature of each area of a double-screw extruder in the melting processing process. The flame-retardant biodegradable plastic prepared in the invention is used as a raw material, and the prepared flame-retardant biodegradable injection molding product has good flame retardance and environmental protection property, can effectively reduce the risk of fire, and provides a healthier and more comfortable living environment for users.

This invention relates to austenitic stainless steel. According to the invention, by adding inexpensive carbon (C) and nitrogen (N) elements, the cost is lower than that of conventional 304STS and 316STS, and weight loss is reduced in immersion testing (ASTM G48-11). Furthermore, the impact absorption energy at approximately -196°C can be at least 41 J.

The present invention relates to a luminescent sanitary device comprising a printed circuit board (PCB) directly assembled onto its body. The light-emitting sanitary device comprises a body part containing a head part and a handle part; a printed circuit board (PCB) having a shape corresponding to the shape of the body portion and provided therein, equipped with a power button provided in the handle portion region, and a light source portion including a plurality of light sources, emitting light to the head region through the light guide body; the vibration motor is arranged at the upper end area of the handle part of the body part and is fixed on the PCB by welding; the bristle plate is arranged on the light source part of the head area of the PCB and is fixed on the light source part; and the bristle plate is provided with toothbrush bristles comprising at least one light guide body. The luminous sanitary device is characterized in that the PCB is directly assembled in the body, and the PCB with the vibration motor is directly assembled on the inner rib of the body part, so that due to the direct assembly of the PCB and the vibration motor, the noise is reduced, the noise is further reduced by stable vibration, the safety is improved, and the convenience is further enhanced.

The application discloses a flange-free pipe expanding machine and method for heat exchangers, which comprises a stamping mechanism and a supporting tool, the supporting tool comprises a fixed seat, the upper side of the fixed seat is connected with a sliding plate through a slide rail, the upper side of the sliding plate is connected with a bottom plate, the upper side of the bottom plate is connected with a plurality of longitudinally arranged floating blocks, and the upper side of the bottom plate is also provided with supporting blocks; the stamping mechanism comprises a supporting frame, the supporting frame is connected with a stamping driving device, the driving end of the stamping driving device is connected with a lifting positioning plate, the lower side of the lifting positioning plate is connected with a plurality of stamping rods, and the lower end of the stamping rod is connected with a pipe expanding end; the floating blocks arranged on the bottom plate offset the downward pressure of the stamping rods on the cooling pipe during pipe expanding, so that the length of the upper end of the cooling pipe extending out of the tube plate after pipe expanding is sufficient and in a uniform alignment state, and the sealing property and corrosion resistance of the tube plate are ensured.

The invention discloses a method and system for calculating construction machinery work quantity based on budget machinery demand quantity, and the method comprises the steps: collecting construction machinery data of an actual project site, the construction machinery data comprising machinery model, power and efficiency; collecting related data of the budgeting machine, wherein the related data comprises industrial standard parameters and enterprise quota data; calculating an effect conversion coefficient between an actual construction machine and the budgeting machine according to the construction machine data and the related data of the budgeting machine, wherein the effect conversion coefficient is used for evaluating the performance difference of different machines under the same working condition; according to the efficacy conversion coefficient, the budgeting machine is replaced and optimally configured, the method is used for achieving efficient utilization of mechanical resources, the method achieves construction machine work amount calculation based on actual needs, errors caused by insufficient information in a traditional budgeting method are reduced, and therefore the budgeting accuracy is improved.

The present invention relates to a coating jig for stents. According to the present invention, a coating jig for stents, having a surface roughness, comprises a jig shaft portion, a first block portion fixedly coupled to a first end of the jig shaft portion, a second block portion opposingly disposed with respect to the first block portion and variably positioned to slide along an outer circumference of the jig shaft portion, and a surface region. A surface roughness may be formed on at least one or more of the jig shaft portion, the first block portion, and the second block portion.