摘要：【中文】本发明公开了一种冷轧电镀锡钢板的制造方法，主要解决现有技术生产的冷轧电镀锡钢板的镀锡层内铅的质量含量不能稳定低于0.01％的技术问题。本发明提供的一种冷轧电镀锡钢板的制造方法，包括以下步骤，对厚度为0.12～0.40mm冷轧电镀锡钢板的原板依次进行碱洗、酸洗、电镀锡、助熔、软熔、钝化处理。本发明方法生产的冷轧电镀锡钢板，冷轧电镀锡钢板的镀锡层重量为0.9～2.2g/m²，冷轧电镀锡钢板的镀锡层内铅的质量含量为0.001％～0.008％。本发明方法生产的冷轧电镀锡钢板主要用于食品饮料包装以及电子工业行业，本发明方法适用于线材、连接器及其它电镀锡行业。 【EN】The invention discloses a method for manufacturing a cold-rolled electrotinning steel plate, which mainly solves the technical problem that the mass content of lead in a tin plating layer of the cold-rolled electrotinning steel plate produced by the prior art cannot be stably lower than 0.01 percent. The invention provides a method for manufacturing a cold-rolled electrotinning steel plate, which comprises the following steps of sequentially performing alkali washing, acid washing, electrotinning, fluxing, softening and passivating treatment on a raw plate of the cold-rolled electrotinning steel plate with the thickness of 0.12-0.40 mm. The cold-rolled electroplated tin steel plate produced by the method of the invention,the weight of the tin coating of the cold-rolled electrolytic tin-plated steel plate is 0.9-2.2 g/m²The mass content of lead in the tin plating layer of the cold-rolled electroplated tin steel plate is 0.001-0.008%. The cold-rolled electrotinning steel plate produced by the method is mainly used for food and beverage packaging and the electronic industry, and the method is suitable for wire rods, connectors and other electrotinning industries.

摘要：【中文】本发明公开了屈服强度600MPa级低合金钢板的MAG焊接方法，主要解决现有5‑12mm厚屈服强度600MPa级低合金热轧钢板采用MAG焊接后存在的焊接热影响区软化明显、接头强度不足及冲击韧性偏低的技术问题。本发明提供的一种屈服强度600MPa级低合金热轧钢板的MAG焊接方法，包括：1)根据工件设计尺寸裁剪待焊热轧钢板；2)对待焊热轧钢板的焊接接头处进行处理；3)打底焊接，焊接前不预热待焊热轧钢板；4)填充焊接；5)盖面焊接；6)焊后冷却。本发明方法焊接效率高，焊接质量好，焊接接头具有优良的强韧性，操作简便，焊接成本低。 【EN】The invention discloses an MAG welding method of a low-alloy steel plate with a yield strength of 600MPa, which mainly solves the technical problems of obvious softening of a welding heat affected zone, insufficient joint strength and low impact toughness of the conventional low-alloy hot-rolled steel plate with a thickness of 5-12mm and a yield strength of 600MPa after MAG welding. The invention provides a MAG welding method of a low-alloy hot-rolled steel plate with yield strength of 600MPa, which comprises the following steps: 1) cutting the hot rolled steel plate to be welded according to the design size of the workpiece; 2) processing the welding joint of the hot-rolled steel plate to be welded; 3) backing welding is carried out, and the hot rolled steel plates to be welded are not preheated before welding; 4) filling and welding; 5) welding the cover surface; 6) and cooling after welding. The method has the advantages of high welding efficiency, good welding quality, excellent toughness of the welding joint, simple and convenient operation and low welding cost.

摘要：【中文】本发明涉及一种甲基磺酸锡系电镀液的回收装置及方法，包括镀液漂洗系统、镀液循环槽、废水坑、废水排放管道以及蒸发器，镀液漂洗系统上方设有MSA原液加料装置，镀液循环槽通过第一镀液循环管道与蒸发器相连，蒸发器通过第二镀液循环管道与镀液循环槽相连；镀液漂洗系统包括从左往右依次设置，且高度逐渐减小的第三逆流漂洗槽、第二逆流漂洗槽、第一逆流漂洗槽，第一逆流漂洗槽下端设有第一放液管道，第二逆流漂洗槽下端设有第二放液管道，第三逆流漂洗槽下端设有第三放液管道、第四放液管道；本发明在提高连续电镀锡机组甲基磺酸锡系电镀液回收效率同时，在蒸发器蒸发能力下降或冲洗水流量加大时又能保障电镀锡机组连续生产。 【EN】The invention relates to a recovery unit and a method of tin methane sulfonate electroplating solution, which comprises a plating solution rinsing system, a plating solution circulating tank, a waste water pit, a waste water discharge pipeline and an evaporator, wherein an MSA stock solution feeding device is arranged above the plating solution rinsing system, the plating solution circulating tank is connected with the evaporator through a first plating solution circulating pipeline, and the evaporator is connected with the plating solution circulating tank through a second plating solution circulating pipeline; the plating solution rinsing system comprises a third countercurrent rinsing tank, a second countercurrent rinsing tank and a first countercurrent rinsing tank which are sequentially arranged from left to right and gradually reduce in height, wherein a first liquid discharge pipeline is arranged at the lower end of the first countercurrent rinsing tank, a second liquid discharge pipeline is arranged at the lower end of the second countercurrent rinsing tank, and a third liquid discharge pipeline and a fourth liquid discharge pipeline are arranged at the lower end of the third countercurrent rinsing tank; the invention can improve the recovery efficiency of the tin methane sulfonate system electroplating solution of the continuous tin electroplating unit, and can ensure the continuous production of the tin electroplating unit when the evaporation capacity of the evaporator is reduced or the flow of flushing water is increased.

摘要：【中文】本发明提供的大叶种茶树嫩穗嫁接方法，嫁接时期选择在接穗茶树越冬芽萌发形成第一轮幼嫩枝条时期，嫁接方法包括：接穗枝条选择、接穗枝条采集、接穗削取、实生砧木接位选择及处理、切砧木接口、插合接穗、“育芽小温室”制作和接口封绑。本发明提供的技术方案，一方面，采用腹接与芽接揉合的“腹芽混接”方法，解决了传统嫁接方法中因为接穗容易失水或室息导致成活率低的问题；另一方面，通过采集少量的大叶种茶树新品种或新种质资源的幼嫩枝条，然后与实生茶树砧木进行嫁接，再通过精心的茶园栽培管理，快速形成丰产型树冠，加快了新品种茶园扩繁进程，达到了“年头嫁接、年尾见产”的目的，实现了大叶种茶树新品种或新种质资源的高效快速扩繁。 【EN】The invention provides a method for grafting tender shoots of large-leaf tea trees, which selects a period of first round of tender branches formed by germinating overwintering buds of the grafted tea trees in a grafting period, and comprises the following steps: selecting scion branches, collecting the scion branches, cutting the scions, selecting and processing grafting positions of seedling stocks, cutting stock interfaces, inserting and jointing the scions, manufacturing a 'bud-growing small greenhouse' and sealing and binding the interfaces. According to the technical scheme provided by the invention, on one hand, a ventral bud mixed grafting method of combining ventral grafting and bud grafting is adopted, so that the problem of low survival rate caused by easy water loss or room respiration of the scion in the traditional grafting method is solved; on the other hand, a small amount of young twigs of the new variety or the new germplasm resource of the large-leaf tea tree are collected, then the young twigs are grafted with the stock of the seedling tea tree, and then the intensive tea garden cultivation management is performed, so that a high-yield crown is quickly formed, the propagation process of the new variety tea garden is accelerated, the purposes of annual head grafting and annual tail production are achieved, and the efficient and quick propagation of the new variety or the new germplasm resource of the large-leaf tea tree is realized.