什么是热成型钢板车身件？
将硼钢钢板(初始强度为500~600MPa)加热至奥氏体化状态，快速转移到模具中高速冲压成形，在保证一定压力的情况下，制件在模具本体中以大于27℃/s的冷却速度进行淬火处理，保压淬火一段时间，以获得具有均匀马氏体组织的超高强钢零件（1300-1600Mpa）。
为何要使用热成型钢板车身件？
极高的材料强度及延展性。一般的高强度钢板的抗拉强度在400-450MPa左右，而热成形钢材加热前抗拉强度就已达到500-800 MPa，加热成形后则提高至1300-1600 MPa。因此由热成型钢板制成的车身极大的提高了车身的抭碰撞能力和整体安全性，在碰撞中对车内人员会起到很好的保护作用。
有效的减轻整车重量，节约能耗。由于热成型钢板极高的材料强度，因此在设计时可以用一个热成形零件代替多个普通钢板的零件。这种零件具有厚度薄、重量轻、强度高，相比冷冲压回弹性小，适合制造汽车A柱加强版、B柱加强版、地板部件、前端等，可为汽车提高安全性，减轻重量。
地板加强板使用了热成型钢板
侧围的A/B 立柱加强版使用了热成型钢板
正如上述，热成型钢板有诸多优势，故在汽车厂得到了越来越普遍的应用。但是，由于热成型钢板的电阻点焊的焊接性能非常特别，焊接参数带非常窄，不同的厂家提供的热成型钢板的焊接电阻也差别大，进口的和国产的热成型钢板的电阻焊接性能也相差较大，这些都给汽车厂的零件的点焊工艺提出了严重的挑战。汽车厂很难解决热成型钢板点焊时出现的大飞溅和大毛刺，于是，只能采用后续的毛刺打磨工序，来解决这个问题。设定打磨工序，不但污染环境，浪费人力物力，而且也整体降低了汽车零部件的生产效率。
热成型钢板点焊时，每个焊点都出现了严重的焊后毛刺
使用热成型板中频点焊技术 — 实现无飞溅，无毛刺的热成型钢板的点焊
荣仕杰的中频电阻点焊，使用的是动态电阻样本曲线的可视化方式，可以轻松地得出各种热成型钢板的动态电阻特性曲线，并详细分析出，不同类型，不同厂家提供的热成型钢板的动态电阻特性曲线，从而快速地得出各种热成型钢板合格的焊接规范及其动态电阻样本曲线；在准确得到焊接热成型钢板合格的焊点（无飞溅，无毛刺）之后，立即将该动态电阻样本曲线，下载到荣仕杰的焊接控制器里，接下来，打开自适应调节功能，这样热成型钢板的焊点质量，就能完美闭环控制，而且没有飞溅和毛刺，轻松彻底解决长期困扰汽车厂的焊接工艺难题。
目前，荣仕杰这种样焊接热成型钢板技术，已经广泛应用在国内大多数汽车工厂，好评如潮。无论是在手工焊接工位，还是机器人焊接工位，荣仕杰的中频电阻点焊技术，都能巧夺天工般进行完美演绎。
英文版：
Rong Shijie hot forming plate spot welding technology.
Abstract: Rongshijie's IF adaptive resistance spot welding uses a visualization method of dynamic resistance sample curve, which can easily obtain the dynamic resistance characteristic curves
of various thermoformed steel sheets, and analyze in detail, different types and different manufacturers. The dynamic resistance characteristic curve of the thermoformed steel sheet is provided, so that the qualified welding specifications of various
thermoformed steel sheets and the dynamic resistance sample curve thereof can be quickly obtained; the qualified solder joints of the welded thermoformed steel sheet can be accurately obtained (no splash, no burr) Immediately, the dynamic resistance
sample curve is downloaded to Bosch's welding controller. Next, the adaptive adjustment function is turned on, so that the quality of the welded joint of the thermoformed steel plate can be perfectly closed-loop controlled without splashes and burrs.
Thoroughly solve the welding process problems that have long plagued automobile factories.
What is a thermoformed steel body part?
The boron steel plate (initial strength is 500~600MPa) is heated to the austenitizing state, and is quickly transferred to the high-speed stamping forming in the mold. Under the condition of ensuring a certain pressure, the workpiece is more
than 27 ° C / s in the mold body. The cooling rate is quenched and quenched for a period of time to obtain ultra-high strength steel parts (1300-1600 MPa) with uniform martensite structure.
Why use thermoformed steel body parts?
Extremely high material strength and ductility. The tensile strength of a general high-strength steel sheet is about 400-450 MPa, and the tensile strength of the hot-formed steel before heating is 500-800 MPa, and is increased to 1300-1600
MPa after heat forming. Therefore, the body made of thermoformed steel plate greatly improves the collision capability and overall safety of the vehicle body, and plays a good role in protecting the inside of the vehicle during the collision.
Effectively reduce the weight of the vehicle and save energy. Due to the extremely high material strength of thermoformed steel sheets, it is possible to replace a number of common steel sheet parts with a hot formed part during design. This
kind of parts has thin thickness, light weight and high strength. It is suitable for the manufacture of automobile A-pillar reinforced version, B-pillar reinforced version, floor parts and front end, etc., which can improve safety and reduce weight
for automobiles.
Floor reinforced panels use thermoformed steel sheets
Floor reinforced panels use thermoformed steel sheets
Side-walled A/B column reinforcement uses thermoformed steel
Side-walled A/B column reinforcement uses thermoformed steel
As mentioned above, thermoformed steel sheets have many advantages and are therefore becoming more and more popular in automotive plants. However, due to the special welding performance of the resistance spot welding of the thermoformed steel
sheet, the welding parameter band is very narrow, and the welding resistance of the thermoformed steel sheet provided by different manufacturers is also large, and the resistance welding properties of the imported and domestic thermoformed steel sheets
are also The large difference is a serious challenge to the spot welding process of the parts of the automaker. It is difficult for automakers to solve the large splashes and large burrs that occur during spot welding of hot-formed steel sheets. Therefore,
only the subsequent burr grinding process can be used to solve this problem. Setting the grinding process not only pollutes the environment, but also wastes manpower and material resources, and also reduces the overall production efficiency of auto
parts.
Severe post-weld burrs at each solder joint during spot welding of hot-formed steel sheets
Severe post-weld burrs at each solder joint during spot welding of hot-formed steel sheets
Use Rongshijie IF welding technology - spot welding of sputter-free, burr-free thermoformed steel sheets
Rong Shijie's medium frequency resistance spot welding uses a visualization method of dynamic resistance sample curve. It can easily obtain the dynamic resistance characteristic curves of various thermoformed steel sheets, and analyze in detail
the different types and different manufacturers provide thermoforming. The dynamic resistance characteristic curve of the steel plate, so as to quickly obtain the qualified welding specifications of various thermoformed steel sheets and their dynamic
resistance sample curves; after accurately obtaining the qualified solder joints of the welded thermoformed steel sheets (no splash, no burr), immediately The dynamic resistance sample curve is downloaded to Bosch's welding controller. Next, the adaptive
adjustment function is turned on, so that the solder joint quality of the thermoformed steel plate can be perfectly closed-loop controlled, and there is no splash and burr, and the long-term trouble is easily solved. The welding process of the car
factory.
At present, Rongshijie's sample curve thermoformed plate welded thermoformed steel plate technology has been widely used in most domestic automobile factories, and received rave reviews. Whether in the manual welding station or the robotic
welding station, Rongshijie's medium-frequency resistance spot welding technology can be perfectly interpreted.
Bosch Rexroth spot welding of thermoformed steel in manual work
