| 1. |
焊料焊接间空（在管道外部和焊料杯口接头内径之间）和焊料杯口接头深度（管道插入深度）。
Soldering Clearance
(between the outside of the tube and the inside diameter of the solder
cup) and the Depth of the Solder Cup (into which
the tube is inserted).
图表1 - 焊料焊接清理和焊料杯口深度
Chart 1 - Soldering Clearance and Solder Cup Depth |
管件公
称通径
Nominal
Size
of Fitting
| 管道最
大内径
Maximum
I.D. of
Fitting |
管道最
大外径
Minimum
O.D. of
Tube |
焊料焊接
最大间空
Maximum
Clearance
for
Soldering |
焊料杯口
深度
Depth of
Solder Cup |
英寸
inch
| 英寸
Inch |
毫米
mm |
英寸
Inch |
毫米
mm |
英寸
Inch |
毫米
mm |
英寸
Inch |
毫米
mm |
DN8
1/4
| 0.381 |
9.66 |
0.374 |
9.50 |
0.007 |
0.18 |
0.31 |
7.9 |
DN10
3/8
| 0.506 |
12.85 |
0.499 |
12.67 |
0.007 |
0.18 |
0.38 |
9.7 |
DN15
1/2
| 0.631 |
16.03 |
0.622 |
15.80 |
0.009 |
0.23 |
0.50 |
12.7 |
DN17
5/8
| 0.756 |
19.20 |
0.749 |
19.02 |
0.007 |
0.18 |
0.62 |
15.7 |
DN20
3/4
| 0.881 |
22.38 |
0.872 |
22.20 |
0.009 |
0.23 |
0.75 |
19.1 |
DN25
1
| 1.132 |
28.75 |
1.123 |
28.54 |
0.009 |
0.23 |
0.91 |
23.1 |
DN32
11/4
| 1.382 |
35.10 |
1.373 |
34.88 |
0.009 |
0.23 |
0.97 |
24.6 |
DN40
11/2
| 1.633 |
41.48 |
1.623 |
41.22 |
0.010 |
0.25 |
1.09 |
27.7 |
DN50
2
| 2.133 |
54.18 |
2.123 |
53.92 |
0.010 |
0.25 |
1.34 |
34.0 |
DN65
21/2
| 2.633 |
66.88 |
2.623 |
66.62 |
0.010 |
0.25 |
1.47 |
37.3 |
DN80
3
| 3.133 |
79.58 |
3.123 |
79.32 |
0.010 |
0.25 |
1.66 |
42.2 |
DN90
31/2
| 3.633 |
92.28 |
3.623 |
92.02 |
0.010 |
0.25 |
1.91 |
48.5 |
DN100
4
| 4.133 |
104.98 |
4.123 |
104.72 |
0.010 |
0.25 |
2.16 |
54.9 |
DN125
5
| 5.133 |
130.38 |
5.123 |
130.12 |
0.010 |
0.25 |
2.66 |
67.6 |
DN150
6
| 6.133 |
155.78 |
6.123 |
155.52 |
0.010 |
0.25 |
3.09 |
78.5 |
| |
美国国家标准局报告BMS58“铜管软焊连接强度”测试了DN20管道和管件上的焊料连接特性后，称“如果间空大于0.25毫米，则焊料很难完全充满间空”。
The National Bureau of Standards Report
BMS58, "Strength of Soft-Soldered Joints in Copper Tubing,"
reporting on tests conducted with 3/4-inch
tubing and fitting, says "When the clearance is greater
than 0.010 inch (0.25 mm), there is difficulty in filling the
joint properly." |
|
| |
|
| 2. |
焊料渗透深度是影响连接部分断裂负载能力的最主要因素。如果焊料焊接间空太大，就没有毛细流动来确保焊料渗透。正如下表所示，DN20管道连接的抓力与焊料渗透深度直接成正比例关系。
Depth of Solder Penetration
drastically affects the breaking load of the joint. When there is
too great a soldering clearance, there is no capillary flow to assure
complete solder penetration. As shown in the chart below, the holding
power of the 3/4-inch joint is directly proportional
to the depth of solder penetration.
例如：如果渗透深度只有三分之一，则只能获得确保完全满意的强度的三分之一左右。
For example: If you get only one-third penetration,
you get approximately one-third the strength needed to assure complete
satisfaction.
图表2
- K类DN20管道
Chart 2 - Type K 3/4"
Tubing
 |
|
 |
焊料渗透到杯口深度的三分之一
- 断裂负载大约为955公斤。
Solder penetration of one-third the cup
depth - breaking load, approximately 2, 100 lb. (955 kg) |
|
焊料渗透到整个杯口深度
- 断裂负载大约为3175公斤
Solder penetration of the entire cup depth
- breaking load approximately 7,000 lb. (3175 kg) |
|
|
|
 锻造黄铜管件
WROT
COPPER FITTINGS
 铸造黄铜合金管件
CAST COPPER ALLOY FITTINGS |
如何确保恰当的公差
HOW TO BE SURE OF PROPER TOLERANCES |
| |
很显然，根据图表1所示的尺寸，所有用来测试管道和管件的科学仪器在实际应用中都是行不通的。因此，最根本的办法就是所采用并安装的管道和管件都应该由专注于高质量管理标准的知名企业制造。如果您遇到焊料很难正确充满连接部位的情况，美国尼伯科公司可以免费分析原因所在。您只需将6英寸长的管道与管件一起寄到美国尼伯科公司即可，我们技术部门将提供权威的测试报告给您。
It is apparent that all of the scientific
apparatus used to test tube and fittings, according to the dimensions
indicated in Chart 1, would be impractical to use on the job. It is
therefore essential that you install tube and fittings manufactured
by companies known to be dedicated to the highest quality control
standards. Should you encounter a condition where there is difficulty
in filling the joint properly, NIBCO will analyze the trouble without
charge. Just send six inches of the tube, along with the fitting and
our technicians will provide you with an authoritative report. |
本样本所采用的标准单位是美国常用单位；所提供的公制单位仅供参考。每个系统所列的参数值并不是准确的。
U.S. customary units in this document are
the standard; the metric units are provided for reference only. The
values stated in each system are not exact equivalents. |
|
