亚洲综合无码久久精品综合 I 人妻互换一二三区激情视频 I 国产福利视频一区二区 I 夜夜高潮夜夜爽夜夜爱爱 I 欧美又大粗又爽又黄大片视频 I 激情爆乳一区二区三区 I xx性欧美肥妇精品久久久久久 I 日韩精品专区在线影院重磅 I 亚洲精品久久久久久一区二区 I av香港经典三级级 在线 I 少妇熟女视频一区二区三区 I 日本亚洲色大成网站www久久 I 狠狠躁夜夜躁人人爽天天5 I 亚洲最大的成人网 I 正在播放酒店约少妇高潮 I 在线成人精品国产区免费 I av片在线播放 I 国产精品久久久久久超碰 I b站永久免费看片大全 I 久久婷婷国产剧情内射白浆 I 亚洲爆乳精品无码一区二区三区 I 国产一卡二卡三卡四卡 I 玩弄中年熟妇正在播放 I 国产精品久久久久久亚洲色 I 级r片内射在线视频播放 I 欧美牲交a欧美牲交aⅴ I 一区二区视频 I 免费看成人欧美片爱潮app I 水蜜桃色314在线观看 I 亚洲在线 I 久久久精品一区aaa片 I 熟妇人妻无乱码中文字幕真矢织江 I 国产亚洲精品久久久久久打不开 I 国产精品无码久久久久久 I 无码人妻精品一区二区在线视频

The forging parts are made by mechanical forging and pressing mechanism. Before work, the forging parts should be done carefully. The molds should be in good condition without cracks, installed correctly and fastened firmly. Clean up the debris in the slider travel space and mold space; Will die preheat to 150 ° С ~ 200 ° С left and right sides, and pay attention to preheat before work out.

Before starting the main motor, test the solenoid air valve of the clutch, and confirm that the action of the air valve, clutch and brake is accurate, sensitive and reliable before starting the main motor. The steering of the main motor must be in accordance with the specified direction; Alignment of closing height must be carried out in strict accordance with the alignment procedures and methods stipulated in the specification; Do not switch on the main motor when adjusting the lower charging device.

"Inching" should only be used for the first step stroke of the slider after empty operation test or change of mold or speed adjustment closing height. Its program is: start the main motor for a moment, close the main motor with flywheel inertia, "inching" slider stroke. Check whether the closing height and concentricity of the mold are appropriate, and then use "inching", "one-stroke" and "continuous stroke" in turn to operate according to the working specifications.

Forging press work, prohibit forging temperature below 900 ° С forging parts; When the slider is running, no head or hands are allowed to reach into the closed space of the mold, and no pliers are allowed to reach into the mold to correct or take or place the forging. Also often pay attention to the working of the mold, if found loose phenomenon immediately tighten.

If e excrement needs attention, when the forging blank is put into the mold and the forging is taken out from the mold, it is forbidden to put the foot on the power pedal; The oxide scale on the mold should be cleaned frequently. After work, the slider should be stopped at the upper dead point for the next forging production.