很多师傅一看洗不干净，第一反应是加压力、换喷嘴、把水温拉到80℃。结果铝件表面出现水纹印、钢件焊缝周边发黄、铜件失去本色。这时候再调机械参数已经没用——问题在槽里的那桶水。

Many masters' first reaction when they see that they cannot clean thoroughly is to increase pressure, change the nozzle, and raise the water temperature to 80 ℃. As a result, water marks appeared on the surface of the aluminum parts, yellowing occurred around the welding seams of the steel parts, and the copper parts lost their natural color. Adjusting the mechanical parameters at this point is no longer useful - the problem lies with the bucket of water in the tank.

喷淋清洗机洗掉的不是“脏”，是“脏和清洗剂的反应产物”。选错药剂，等于用脏水洗澡。

The spray cleaning machine does not wash away dirt, but rather the reaction product between dirt and cleaning agents. Choosing the wrong medication is equivalent to taking a bath with dirty water.

按材质挑清洗剂，比挑泵还重要：

Selecting cleaning agents based on material is more important than selecting pumps:

钢件、铸铁件：碱性脱脂剂（pH 10~12）非常稳，皂化切削油和冲压油快。但别长期泡，洗完不漂净会返锈，漂洗段加一道防锈水（亚钠或硼酸酯类）再烘干。

Steel and cast iron parts: Alkaline degreaser (pH 10-12) is the most stable, and saponification of cutting oil and stamping oil is fast. But don't soak for a long time. If you don't rinse thoroughly after washing, rust will return. Add a layer of rust proof water (sodium or borate ester) to the rinsing section and then dry.

铝件、铝合金：碱性一强就咬边、发暗。用中性或弱碱（pH 7.5~9.5）专用铝清洗剂，带缓蚀因子，温度别超60℃，不然氧化膜被活化，烘干后全是水斑。

Aluminum parts and alloys: When alkaline is strong, they bite and darken. Use a neutral or weak alkaline (pH 7.5-9.5) specialized aluminum cleaning agent with a corrosion inhibitor and a temperature not exceeding 60 ℃, otherwise the oxide film will be activated and water spots will appear after drying.

铜、黄铜件：绝对避开含胺、含氨的配方，会变色发黑。用铜专用中性清洗剂，漂洗后立刻热风干，别在槽里闷。

Copper and brass parts: Absolutely avoid formulas containing amines or ammonia, as they may discolor and turn black. Use copper specific neutral cleaning agent, rinse and immediately dry with hot air, do not let it stuffy in the tank.

不锈钢精密件：氯离子含量压到50ppm以下，不然应力腐蚀裂纹从喷淋死角开始长。

Stainless steel precision parts: The chloride ion content should be reduced to below 50ppm, otherwise stress corrosion cracks will start to grow from the spray dead corner.

带盲孔、螺纹的组件：选低泡型。高泡剂被泵抽循环，液位上蹿下跳，压力表指针跳舞，实际到喷嘴的水反而少。

Components with blind holes and threads: choose low foam type. The high foaming agent is pumped and circulated, causing the liquid level to jump up and down and the pressure gauge pointer to dance, resulting in less water actually reaching the nozzle.

再看三个现场必漏的“水管理”动作：

Let's take a look at three essential "water management" actions that must be leaked on site:

浓度别靠倒感觉。每天用折光仪测一次工作液浓度，补加按“蒸发量+带出量”算，不按“看着浑就倒”。浓度过高残留在工件上，烘干后全是白霜。

Don't lean against the feeling of concentration. Measure the concentration of the working solution once a day using a refractometer, and add it according to the calculation of "evaporation rate+carryover rate", instead of "looking turbid and pouring". The concentration is too high and remains on the workpiece, resulting in white frost after drying.

换槽周期看电导率和油含量，不看颜色。水还清亮，但电导已经飙到8000μS/cm，说明乳化油逆溶解，洗一件脏一件。

The replacement cycle depends on conductivity and oil content, not color. The water is still clear, but the conductivity has soared to 8000 μ S/cm, indicating that the emulsified oil has dissolved backwards, washing one dirty piece after another.

漂洗水要溢流。非常后一道漂洗槽做连续溢流+定期全换，别和主洗槽共用补水管。很多“洗完发花”的客诉，根子在漂洗段变成了稀脱脂液。

The rinsing water is about to overflow. The last rinsing tank should have continuous overflow and regular full replacement, and should not share the water replenishment pipe with the main washing tank. Many customers who have finished washing their hair have complained that the roots have turned into thin degreasing solution during the rinsing stage.

顺手一条红线：别拿同一槽水轮换洗钢件和铝件。前一批钢件留下的碱性残液，足够让下一批铝件整筐报废。多材质混线生产，要么分槽，要么在转产时用中和剂把pH拉回中性再换料。

A handy red line: Do not use the same water wheel to clean steel and aluminum parts. The alkaline residue left by the previous batch of steel parts is enough to scrap the entire basket of aluminum parts for the next batch. Multi material mixed line production, either by dividing the tank or by using a neutralizing agent to bring the pH back to neutral before changing the material during production.

把“钢用碱、铝用弱碱、铜避氨、盲孔用低泡、漂洗单独溢流”这五句写在配液桶旁边，喷淋机的高压水才真正打到“干净”而不是“换一种脏”。

Write these five sentences next to the mixing tank: 'Steel uses alkali, aluminum uses weak alkali, copper avoids ammonia, blind holes use low foam, and rinsing overflows separately', so that the high-pressure water of the sprinkler can truly be 'clean' instead of 'dirty'.