The new stagnation container developed by the AQSIQ Scientific Research Project “Research on a vibration-reducing stagnation vessel with temperature regulation function†adopts an internal and external double-layer structure to form a cooling water circulation system in the walls of the two-layer vessel to achieve effective temperature control. And regulation; stagnation containers increase the water ring damping system, with good damping effect. Experts in the acceptance group believe that the research results have reached the leading domestic level.
In the science and technology project of Fujian Provincial Bureau of Quality Supervision, the pipeline vibration suppression device developed by "Research on the Effect of Pipeline Vibration on the Metering Performance of the Flowmeter and Vibration Reduction Method" effectively reduces the influence of pipeline vibration on the metering performance of the flowmeter; Detection and Tracking of Wireless Video Security Monitoring and Alarming Devices †A set of intelligent video security monitoring and alarm devices integrating digital video processing technology, automatic control, wireless network transmission, and artificial intelligence, which can realize real-time detection and tracking movement into the monitoring range The target can be automatically alarmed and stored, and has strong anti-environmental interference and broad application prospects. The open channel flow meter and its test device based on laser measurement technology developed by “Open Channel Flowmeter Based on Laser Measurement Technology†adopt laser, ultrasonic and electromagnetic induction. The combination of measurement techniques enables a multi-parameter measurement of open channel flow to achieve a transition from theoretical to actual measurement of fluid flow in open channels. Experts in the acceptance group believe that the above three research results have reached the domestic advanced level.
(Original title: The four scientific research results of the national steam flow meter product quality inspection center have reached the domestic leading level)
BRIGHT STEEL BAR
Bright steel bar is carbon or alloy steel bar with shining bright surface which is improved by cold drawing, peeling, turning, grinding and polishing over hot rolled black surface bars. By cold drawing, the steel bar yield strength and tensile strength will be improved. By peeling and turning, the surface imperfections will be removed. By grinding, the diameter tolerance will be more precision. By polishing, the surface will be much more shining.
Except the shining bright surface, comparing with the hot rolled black surface bars, the bright steel bars has better surface roughness, better roundness, straightness, more precision size tolerance etc.
Heat treatment such as annealing, normalizing, quenching and tempering will be done before do cold finishing on the hot rolled bar to get bright steel bar, in such condition, the steel bright bar will get most suitable mechanical properties to meet different application requirement.
The advantages of steel bright bars we supply:
1) Big stocks of hot rolled round bars or wire rods as raw materials
2) Heat treating furnaces to adjust the mechanical properties
3) Full sets of testing equipment to test the sizes, mechanical properties and microstructure.
4) Multiple packages to avoid broken packages and anti-rusty
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Diameter tolerance |
+0/-0.02mm |
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Straightness |
0.5mm/m |
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Surface roughness |
0.4um |
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Roundness |
80% of diameter tolerance |
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Diameter range |
14mm to 100mm |
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Steel grade |
Kinds of carbon steel and alloy steel |
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Length |
Any length can be cut with precision tolerance |
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SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdcolddrawnsteelbar.com