一、鋁板擠壓產(chǎn)生氣泡、起皮的原因
1. The reasons for the extrusion of aluminum plates to produce bubbles and peels
擠壓筒、擠壓墊磨損超差，擠壓筒和擠壓墊尺寸配合不當，使用的墊片直徑差超過允許值；
The diameter of the gasket is higher than the allowable value because of the improper wear and tear of the extrusion cylinder, the extrusion pad and the improper size of the extrusion cylinder and the extrusion pad.
擠壓筒和擠壓墊太臟，粘有油污、水分、石墨等；
The extrusion cylinder and the extrusion pad are dirty, sticky with oil, moisture, graphite, etc.
潤滑油中含有水；
The lubricating oil contains water.
鑄錠表面鏟槽太多，過深，或鑄錠表面有氣孔、砂眼，組織疏松、有油污等；
The surface of the ingot is too much, too deep, or the surface of the ingot has holes and sand holes, which are loose and oily.
更換合金時，筒內(nèi)未清理干凈；
When the alloy is replaced, the inside of the cylinder is not cleaned.
擠壓筒溫度和擠壓鑄錠溫度過高；
The temperature of the extruding tube and the temperature of the extruded ingot are too high.
鑄錠溫度、尺寸超過允許負偏差；
The ingot temperature and size exceed the allowable negative deviation.
鑄錠過長，填充太快，鑄錠溫度不均，引起非鼓形填充，因而筒內(nèi)排氣不完全，或操作不當，未執(zhí)行排氣工序；
The ingots are too long, the filling is too fast, and the temperature of the ingot is uneven, resulting in non drum shaped filling, so the exhaust is incomplete or improper in the cylinder, and the exhaust process is not carried out.
模孔設(shè)計不合理，或切殘料不當，分流孔和導(dǎo)流孔中的殘料被部分帶出，擠壓時空隙中的氣體進入表面。
The design of the mold hole is unreasonable, or the cutting residual material is not proper. The residual material in the diverting hole and the diversion hole is partly taken out, and the gas in the space time gap is extruded into the surface.

二、鋁板擠壓產(chǎn)生氣泡、起皮的消除方法
Two. Methods to eliminate bubbles and skins from aluminum extrusion.
合理設(shè)計擠壓筒和擠壓墊片的配合尺寸，經(jīng)常檢查工具尺寸，保證符合要求，擠壓筒出現(xiàn)大肚要及時修理，擠壓墊不能超差；
Reasonable design of the matching dimensions of the extruding and extruding gaskets, often check the size of the tool, guarantee the requirements, the extrusion cylinder should be repaired in time, and the extruding pad can not be overtaken.
工具、鑄錠表面保持清潔、光滑和干燥；
The surface of tools and ingots should be clean, smooth and dry.
更換合金時，徹底清筒；
When replacing the alloy, clean the tube thoroughly.
經(jīng)常檢查設(shè)備和儀器，防止溫度過高、速度過快；
Check equipment and instruments regularly to prevent high temperature and speed.
嚴格執(zhí)行工藝規(guī)程和各項制度；
Strictly implement the process regulations and various systems.
合理設(shè)計、制造工模具，導(dǎo)流孔和分流孔設(shè)計成1°-3°內(nèi)斜度；
Reasonable design and manufacture of tooling, diversion holes and diversion holes are designed to be 1 degrees -3 degrees.
嚴格操作，正確剪切殘料和完全排氣。
Strict operation, correct cutting of debris and complete exhaust.