查询词典 welted seam

Main production: hot air seam sealing machine.

主要生产：热风缝口密封机。

These tubular sections are constructed from plate rolled into cylindrical shapes with a submerged arc weld forming the long-seam.

这些管状路段建成后，由钢板卷成圆筒形状，以埋弧焊形成长缝。

In view of the problems occurring in trapezoidal support used in coal seam gateway, a novel small-curvature arch support for mining engineering is presented.

摘要针对煤层顺槽梯形支架存在的问题，提出一种新型结构的小曲率拱型支架。

A new fashioned special seam welder for welding the stainless steel band on the rail surface was developed successfully.

研制了一种新型的钢轨表面不锈钢带专用缝焊机。

Butt Weld and docking and corner combinations Weld, in Weld ends located arc plate and extraction plate in igniting board then leads to the welding seam, joint halfway shall weld joints in front of 2.0 mm Department Firing arc, welding pieces after preheating rod will return to weld the origin, pool filled to the required thickness, before forward welding; Welding speed : Isokinetic welding requirements to ensure weld thickness, width uniform, which masks to look for hot metal and slag bath equidistance (2-3 mm)%; Arc welding rod length : different models and determined that the general requirements of arc length is stable, acid electrode generally 3-4 mm, 2-3 mm normally alkaline electrode%; Welding perspective : According to determine the thickness of two pieces of welding, welding angle has two aspects : First, the angle between the direction of the rod and welding of 60-75 ; The second is the angle between two electrodes and welding around, the same thickness as welding, welding and welding pieces incident angle of 45 ; When the thickness ranging from welding, welding electrode and thick and thin pieces of welding electrode side angle greater than the angle between the side pieces; Arc : admission to the end of each weld should be filled crater, in the direction opposite to the direction of the back-arc welding, arc welding unchanged inside pit in 1974, to prevent the crater bite of meat.

对接焊缝及对接和角接组合焊缝，在焊缝两端设引弧板和引出板，必须在引弧板上引出后再焊到焊缝区，中途接头则应在焊缝接头前方15～20㎜处打火引弧，将焊件预热后再将焊条退回到焊缝起始处，把熔池填满到要求的厚度后，方可向前施焊；焊接速度：要求等速焊接，保证焊缝厚度、宽度均匀一致，从面罩内看熔池中铁水与熔渣保持等距离（2～3㎜）为宜；焊接电弧长度：根据焊条型号不同而确定，一般要求电弧长度稳定不变，酸性焊条一般为3～4㎜，碱性焊条一般为2～3㎜为宜；焊接角度：根据两焊件的厚度确定，焊接角度有两个方面，一是焊条与焊接前进方向的夹角为60～75 ；二是焊条与焊接左右夹角有两种情况，当焊件厚度相等时，焊件与焊件夹角为45 ；当焊件厚度不等时，焊条与较厚焊件一侧夹角应大于焊条与薄焊件一侧夹角；收弧：每条焊缝焊到末尾，应将弧坑填满后，往焊接方向相反的方向带弧，使弧坑甩在焊道貌岸然里边，以防弧坑咬肉。

Negatrons are obtained directly from the oil flowing out of the narrow seam of the knife beam.

喷油梁结构型式与直流电源输出电压是影响静电涂油的主要因素。

The present invention has stepped motor and sync belt driver to drive the label roll, guide wheel and magnetic steel plate to separate the upper paper layer and the lower paper layer from the label belt, electromagnet driven cutter to cut the adhesive film between two successive labels, electromagnet driven magnetic steel block to transfer the label onto the label inserting board, and elevating and rotating manipulator to insert and stick the label inserting board into book seam.

本发明通过步进电机、同步带传动驱动卷标上下层纸带收卷轮的转动，上层纸带与标签及下层纸带与标签之间的分离通过一导轮和磁钢板实现，连续型卷标相邻两个标签之间的不干胶膜由电磁铁驱动的切刀切断，金属标签通过电磁铁驱动磁钢块撞击取签插板而使标签脱离下层纸带被转贴到取签插板上，取签插板手动插入或取出，或者用升降旋转机械手将末端贴有标签的取签插板插入翻开的图书中间夹缝内，使标签转贴到图书内纸上。

Binding to hidden the neck seam raw edge,binding length should be enough covered by the neck opening.

领缝毛边用滚条包，滚条要足长盖住领口。

The test results indicate that T2 Cu/2A50 Al alloy must first be done by blacksmith welding, and then heated between 515℃ and 525℃ for 180 min, the sample pressure is offered by heating and insulation in the process through special fixture, the joints of T2Cu/2A50Al alloy with metallurgy bond can be obtained, and there is obvious welding seam in the interface.

试验结果表明，T2铜／2A50铝合金，采用先锻接，后加热到515~525℃之间，保温180 min，并在加热和保温过程中通过特殊的夹具提供给试样压力，能得到冶金结合的T2铜／2A50铝合金接头，接头界面处出现了明显的焊缝。

Mechanism of rock cutting seam cartridge blasting is introduced.

分析和讨论了切缝药包定向断裂控制爆破作用机理，及其与光面爆破的对比试验。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。