冷却器胀管工艺规程
Cooler Expanding Pipe Process Procedures
一、胀接管子的技术要求 The Requirements Of The Expanding Pipe
1、胀接管子外表面不得有重皮、压扁、裂纹等表面缺陷，胀接管端不得有纵向刻痕。如有横向刻痕、麻点等缺陷时，缺陷深度不超过管子公称壁厚的10%。
Expanding pipe outside surface can not have surface defects,such as heavy leather, flattening, cracks etc.,expanding pipe end can not have longitudinal notching.If there is a defect such as transver notching, pitting etc.,depth shall not exceed 10% of the pipe nominal wall thickness.
2、胀接管子的端面倾斜度应不大于管子公称外径的1.5%,且最大不超过1mm 。
The transver slope of the expanding pipe should not be greater than 1.5% of the pipe nominal diameter,And not more than 1 mm.
3、胀管前应对管端进行清理, 管端内表面应无腐蚀和碎屑等杂物并清除毛刺。
Before the expansion pipe, should be to clean up the pipe end,The pipe end inner surface should be no miscellaneous items such as corrosion and bits etc.,and remove burrs.
二、 胀接管孔的技术要求 The Expansion Pipe Hole Of Technical Requirements
1、用汽油等溶剂清洗管孔壁上的油污，并去除管孔边缘毛刺，管孔壁的最大粗糙度不大于6.3。
U the solvent such as gasoline to cleaning hole wall of greasy dirt,and remove pipe hole edge burr,the maximum roughness of the pipe hole wall not greater than 6.3.
2、清理后的管孔壁不得有纵向刻痕，个别管孔允许有一条螺旋形或环形刻槽，刻槽深度不超过0.5mm，宽度不得超过1mm, 刻痕距管孔端部的距离不小于4mm。
After cleaning, the pipe hole wall can not have longitudinal notching,individual pipe hol
e is allowed a spiral or annular groove,groove depth is less than 0.5 mm, width must be less than 1 mm,the pipe hole end distance the notching at least 4 mm.
3、管孔尺寸按图纸要求。
The pipe hole size according to the drawing requirements.
4、如管孔直径超差，超差数值不得超过标准偏差值的50%。当管孔不大于500时，超差孔数不得超过总数的2%, 且不超过5个。当管孔大于500时，超差孔数不得超过总数的1%, 且不超过10个。对于超差管孔，在管板上作出明显标记。
If the pipe hole diameter than deviation,the deviation exceeding value can not exceed 50% of the standard deviation.When the pipe hole is not greater than 500,the exceeding hole deviation of pipe hole number shall not exceed 2% of the total,and not more than 5.When the pipe hole is greater than 500,the pipe hole of exceeding deviation number shall not exceed 1% of the total,and not more than 10.For the pipe hole of exceeding deviation , make a obvious mark on the pipe sheet.
三、 胀管设备 Expanding Pipe Equipment
电动式机械胀管机和相应胀管器具
Electrodynamic mechanical expansion pipe machine and corresponding expanding pipe apparatus
四、穿管 Inrted Into The Pipe
1、按照每个胀接面总数的10%，且不多于30根，不少于5根，随机测量管孔直径D，管端壁厚t，计算出D和t的算术平均值，并做好记录。
Each of the expanding pipe surface according to 10% of the total number,and no more than 30
roots, not less than 5 roots,Random measurement pipe hole diameter D,the pipe end thickness T,Calculate the arithmetic mean of D and t,and take notes.
2、穿管时应超穿一定距离，以再次清理穿管留下来的污物，清理后退回正确位置。
When inrted into the pipe,should exceed a certain distance,clean up the stranded dirt again,returned to the right place after cleaning.
3、对于管端伸出长度超差要求的管子，应用机械方法去除超长部分，并清除毛刺。
For the pipe of pipe end reach out the length more than deviation requirement,apply the mechanical method to remove super long parts,and remove burrs.
五、胀接技术要求 Expanding Technical Requirements
1、试胀 Try Expanding
1）正式胀接之前应进行试胀，以检查胀管器的质量，管材的胀接性能和确定最佳胀力。
The formal expanding should be try expanding later,check the quality of the expanding pipe, tube expanding performance and determine the optimal expansion force.
2）试胀每胀接面3～5个管口，选用不同的胀管参数，测量实际胀接后的内直径，与计算出的理论胀管内径值比较，并做好记录。
Try expanding 3~5 pipe orifice,choo different expanding pipe parameters,after expanding,measure the actual internal diameter,and calculate the theoretical expansion pipe diameter value comparison,and take notes.
3）试胀后对各个管口进行比较性检查，检查胀口部分是否有裂纹，胀接过渡部分是否有剧烈变化，然后选定外观质量好，且留有充分补胀余地的胀口胀力作为最佳胀力，待正式胀接时使用。
After try expanding,comparative to check on each pipe orifice,To check expanding pipe orifice part whether there is crack，expanding the transition part whether there is a drastic change,then the lected appearance quality is good,and there is sufficient expansion leeway of expanding mouth rve as the best expansion force,when the formal expanding to u.
2、胀接 Expanding
1）根据试胀所确定的最佳胀力或者工艺评定给出的胀管参数进行正式胀接。胀接过程严防油污，水以及灰尘渗入胀接面间。
According to determine the best expansion force or procedure qualification is given parameters on an official expanding.During expanding process ,prohibit oil, water and dirt permeate between expanded surface.
2）胀接采用反阶式胀接顺序或者错列式胀接顺序。
Expanding adopt the cascade order or the staggered quence to expanding.
3）胀接时每胀完15-20个管口，应对胀管器进行清洗，检查有无损伤，反之更换。
When expanding, everytime expanding pipe orifice 15 to 20,should clean the pipe expander,inspect whether there is injure,otherwi replace.
3、胀管率控制 The Control On Pipe Expanding Rate
强度胀：换热管材料为铜、铜合金时,胀管率一般控制在5%～8%范围内，超胀不得超过12%；换热管材料为10钢或20钢时,胀管率一般控制在7%～10%范围内，超胀不得超过13%；换热管材料为不锈钢时,胀管率一般控制在10%～14%范围内，超胀不得超过18%。
Severe expanding:When the heat exchange pipe materials is copper, copper alloy,generally, control on pipe expanding rate within 5% ~ 8%,super expansion should not exceed 12%;the heat exchange tube materials is 10 steel or 20 steel,generally control on pipe expanding rate within 7% ~ 10%,super expansion should not exceed 13%,the heat exchange tube materials is stainless steel,generally control on pipe expanding rate within 10% ~ 14%,super expansion should not exceed 18%.
