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技术参数：
1.适用钢筋直径12-40Ⅱ-Ⅲ级建筑钢筋
2.活塞行程140mm
3.流量5.42L/min
4.镦粗力3000KN
5.电机总功率7.5KW
6.外形尺寸1020＊500＊965（长＊宽＊高）
7.整体净重920Kg
DCJ-40型全套设备包括：
钢筋冷镦粗机一台,高压油一台,高压油管两根,随机配一套模具,一个墩头。
用途： 主要用于建筑工程带肋钢滚轧直螺纹丝头，是实现钢筋连接的关键设备。可加工直径16-40mm。
工作原理：
利用冷镦的原理使钢筋端头塑性变形，直径增大4~6mm，然后再加工螺纹。使加工螺纹后的实际截面积大于原钢筋截面积，大大提高接头的抗拉强度。这种镦粗后的螺纹接头经拉伸实验检测全部断于母材，适用于要求较高的工程。
注意事项：
1.镦长钢筋时，要用工件托架对准中心，并可防止工件松压机器倾倒
2.必须熟记各规格钢筋冷镦时的压力，严防超压
3.模腔滑运面，常除氧化皮、加油
4.注入液压油，必须通过滤油网入油管，液压油升温不能超过45度
5.严禁二次镦粗，影响镦头弯曲、裂开
6.严禁开机离人，造成活塞行程走过头，破坏活动冲模。
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