冷卻器脹管工藝規(guī)程
Cooler Expanding Pipe Process Procedures
一、脹接管子的技術要求
The Requirements Of The Expanding Pipe
1
、脹接管子外表面不得有重皮、壓扁、裂紋等表面缺陷,脹接管端不得有縱向刻痕。
如有橫向刻痕、麻點等缺陷時,缺陷深度不超過管子公稱壁厚的
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 transverse
notching, pitting etc.,depth shall not exceed 10% of the pipe nominal wall thickness.
2
、脹接管子的端面傾斜度應不大于管子公稱外徑的
1.5%,
且不超過
1mm
。
The transverse slope of the expanding pipe should not be greater than 1.5% of the pipe nominal
diameter
,And not more than 1 mm.
3
、脹管前應對管端進行清理
,
管端內表面應無腐蝕和碎屑等雜物并清除毛刺。
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、
脹接管孔的技術要求
The Expansion Pipe Hole Of Technical Requirements
1
、用汽油等溶劑清洗管孔壁上的油污,并去除管孔邊緣毛刺,管孔壁的粗糙度不
大于
6.3
。
Use 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縱向刻痕,個別管孔允許有一條螺旋形或環(huán)形刻槽,刻槽深
度不超過
0.5mm
,寬度不得超過
1mm,
刻痕距管孔端部的距離不小于
4mm
。
After cleaning, the pipe hole wall can not have longitudinal notching,individual pipe hole 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
、管孔尺寸按圖紙要求。
The
pipe hole size according to the drawing requirements.
4
、如管孔直徑超差,超差數(shù)值不得超過標準偏差值的
50%
。當管孔不大于
500
時,超
差孔數(shù)不得超過總數(shù)的
2%,
且不超過
5
個。當管孔大于
500
時,超差孔數(shù)不得超過總數(shù)的
1%,
且不超過
10
個。對于超差管孔,在管板上作出明顯標記。
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、
脹管設備
Expanding Pipe Equipment
電動式機械脹管機和相應脹管器具
Electrodynamic mechanical expansion pipe machine and corresponding expanding pipe apparatus
四、穿管
Inserted Into The Pipe
1
、按照每個脹接面總數(shù)的
10%
,且不多于
30
根,不少于
5
根,隨機測量管孔直徑
D
,
管端壁厚
t
,計算出
D
和
t
的算術平均值,并做好記錄。
According to each of the expanding pipe surface of the total number of 10%
,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
、穿管時應超穿一定距離,以再次清理穿管留下來的污物,清理后退回正確位置。
When
inserted
into
the
pipe,should
exceed
a
certain
distance,clean
up
the
stranded
dirt
again,returned to the right place after cleaning.
3
、對于管端伸出長度超差要求的管子,應用機械方法去除超長部分,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、脹接技術要求
Expanding Technical Requirements
1
、試脹
Try Expanding
1
)
正式脹接之前應進行試脹,
以檢查脹管器的質量,
管材的脹接性能和確定脹力。
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
)試脹每脹接面
3
~
5
個管口,選用不同的脹管參數(shù),測量實際脹接后的內直徑,與
計算出的理論脹管內徑值比較,并做好記錄。
Try
expanding
3~5
pipe orifice
,
choose
different
expanding
pipe
parameters,
after
expanding,measure the
actual internal diameter,and calculate the theoretical
expansion
pipe diameter
value comparison,and take notes.
3
)試脹后對各個管口進行比較性檢查,檢查脹口部分是否有裂紋,脹接過渡部分是否
有劇烈變化,
然后選定外觀質量好,
且留有充分補脹余地的脹口脹力作為脹力
,
待正式
脹接時使用。
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 selected
appearance quality is good,
?,
when the formal expanding to use.
2
、脹接
Expanding
1
)根據(jù)試脹所確定的脹力或者工藝評定給出的脹管參數(shù)進行正式脹接。脹接過程
嚴防油污,水以及灰塵滲入脹接面間。
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
)脹接采用反階式脹接順序或者錯列式脹接順序。
Expanding adopt the cascade order or the staggered sequence to expanding.
3
)脹接時每脹完
15-20
個管口,應對脹管器進行清洗,檢查有無損傷,反之更換。
When expanding, everytime expanding pipe orifice 15 to 20,should clean the pipe expander
,inspect
whether there is injure,otherwise replace.
3
、脹管率控制
The Control On Pipe Expanding Rate
強度脹:換熱管材料為銅、銅合金時
,
脹管率一般控制在
5%
~
8%
范圍內,超脹不得超過
12%
;
換熱管材料為
10
鋼或
20
鋼時
,
脹管率一般控制在
7%
~
10%
范圍內,
超脹不得超過
13%
;
換熱管材料為不銹鋼時
,
脹管率一般控制在
10%
~
14%
范圍內,超脹不得超過
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
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