54results about How to "Suitable for mass production operations" patented technology

The invention relates to a motor-end-cover tin soldering machine. The motor-end-cover tin soldering machine comprises a machine body, feeding rails, a feeding mechanism, a feeding pushing mechanism, a feeding pressing mechanism, a material sensor, a brush pressing mechanism, a soldering mechanism, a soldering jacking mechanism, discharging rails, a tin feeding mechanism and an PLC for controlling the mechanisms, wherein the feeding rails, the feeding mechanism, the feeding pushing mechanism, the feeding pressing mechanism, the material sensor, the brush pressing mechanism, the soldering mechanism, the soldering jacking mechanism, the discharging rails, the tin feeding mechanism and the PLC are arranged on the machine body. The feeding rails are located below the right side of the discharging rails, the feeding mechanism is located on the left side of the feeding rails, the feeding pushing mechanism and the feeding pressing mechanism are arranged over the feeding mechanism, the brush pressing mechanism and the soldering mechanism are arranged over the discharging rails, the soldering jacking mechanism is arranged at the bottom of the discharging rail located under the soldering mechanism, and the PLC is arranged at the portion, behind the feeding rails, of the machine body. According to the motor-end-cover tin soldering machine, the flow-type structural design is adopted, processes of tin welding and the like of end covers are automatically completed through the machine, machining efficiency is effectively improved, and the motor-end-cover tin soldering machine is quite suitable for batch production.

The present invention discloses one kind of thick steel plate with high strength and low welding crack sensitivity and its production process. The chemical composition includes C 0.06-0.09 wt%, Si 0.15-0.55 wt%, Mn 1.00-1.60 wt%, P not more than 0.015 wt%, S not more than 0.006 wt%, Ni 0.15-0.40 wt%, Cr not more than 0.30 wt%, Mo not more than 0.30 wt%, Cu not more than 0.30 wt%, V 0.02-0.06 wt%, Nb 0.005-0.05 wt% and Als 0.010-0.04 wt%, except Fe and inevitable impurities; and meets Pcm not higher than 0.20 % and Ceq not higher than 0.42 %. The production process includes two stage controlled rolling, on-line laminar flow cooling, off-line tempering and other steps. The produced steel plate has thickness up to 75mm, tensile strength not lower than 610 MPa and very low welding crack sensitivity.

The invention provides a high strength low alloy steel plate suitable for high heat input welding and is characterized in that the chemical composition (wt percent) of steel comprises 0.04 percent to 0.16 percent of C, 0.10 percent to 0.50 percent of Si, 0.40 percent to 1.8 percent of Mn, 0.020 percent to 0.050 percent of Nb, 0.006 percent to 0.030 percent of Ti, 0.0030 percent to 0.010 percent of N, 0.015 percent to 0.060 percent of Al and the rest, Fe and other inevitable impurities; meanwhile, C+Mn / 6+Si / 24+Ni / 40+Cr / 5+Mo / 4+V / 14 is less than or equal to 0.45 percent and the total amount of Ti and the total amount of N are that [Ti percent]T is more than or equal to 2.667[N percent]T-0.004667 percent; moreover, Ti microalloying is adopted to ensure that the Ti / N ratio in the second sort of particle generated ranges between 2.4 and 3.2. The manufacture method of the steel plate adopts austenite recrystallization zone and austenite non-recrystallization zone rolling and forced water cooling after rolling; moreover, when the steel plate is under 50 KJ / cm to 150 KJ / cm high heat input welding, the welding heat affected zone has excellent toughness. The invention has the advantages of simple production process, low cost and wide applicability.

The invention provides a secure chip burning method and system. The invention discloses a secure chip burning method. The method specifically comprises the following steps: checking a test machine; reading unique information data of the tested chip; performing encryption calculation on the unique information data of the tested chip according to a preset encryption algorithm to obtain an exclusive digital certificate corresponding to the tested chip; and burning the exclusive digital certificate on the tested chip through the test machine. According to the method, the transmission link of the burnt content of the tested chip is shortened, the burnt content is obtained through calculation by an encryption algorithm after the unique information data of the tested chip is read, the whole data transmission is completely carried out in a hardware security environment, cross-hardware public network transmission is avoided, and the transmission efficiency is improved. The problem of leakage caused by separate distribution of the burnt content and the tested chip in the prior art is solved, and the method has high safety and high convenience and is suitable for batch production operation.

The present invention discloses one kind of thick steel plate with great line energy and low welding crack sensitivity and its production process. The chemical composition includes C 0.06-0.10 wt%, Si 0.15-0.40 wt%, Mn 1.20-1.60 wt%, P not more than 0.015 wt%, S not more than 0.007 wt%, Ni 0.15-0.40 wt%, Cr not more than 0.30 wt%, Mo 0.15-0.30 wt%, V 0.02-0.06 wt%, Al 0.015-0.045 wt%, Ti 0.010-0.034 wt%, except Fe and inevitable impurities; and meets Pcm not higher than 0.20 %. The production process includes pre-treatment of molten iron, smelting in converter, LF furnace plus VD furnace vacuum treatment, two stage controlled rolling, on-line laminar flow cooling, tempering at 600-680 deg.c and other steps. The produced steel plate has no need of quenching and tempering treatment.