DONGYING SHENGMEI
PRECISION CASTINGS METAL CO.,LTD.
  welcome to www.shengmeicasting.com
Chinese
Home Products Messenger Process Design Parameters PDF Contact Us  
 Products  Search
   
                 Products
              Marine hardware
Cleats
Handrail Fittings
Deck Filler and Vent
Hinge
Rod Holders
Door Catcher
Anchor and Anchor Hardware
 
Rigging Hardware
Steering Wheel
Others
              Architectural hardware
             Machining Parts
  Design Parameters
Technical Date for Design Reference 设计参考数据

1、线性公差(MM)Linear Tolerance

尺寸范围
Dimensions
一般公差
Normal
特别公差
Premium
0-10 ±0.12 ±0.1
10-15 ±0.20 ±0.13
15-20 ±0.25 ±0.15
20-30 ±0.30 ±0.20
30-50 ±0.4 ±0.25
50-75 ±0.5 ±0.35
75-100 ±0.65 ±0.45
100-125 ±0.8 ±0.6
125-150 ±1 ±0.7
150-175 ±1.2 ±0.8
175-200 ±1.5 ±0.9
200-250 ±1.8 ±1.1
>250 ±0.8% ±0.5%

 2、可铸出孔槽的极限尺寸 Limit Dimension for Cast Holes and Slots

项目Items 孔径范围(MM)Hole Dia. 孔深/孔径 L/D
φ2-φ3 L/D≤2
φ4-φ7 L/D≤5
≥φ8 L/D≤10
φ2-φ3 L/D≤1
φ4-φ7 L/D≤2.5
≥φ8 L/D≤3.5
利用水溶型芯和陶瓷型芯,我们可以铸出更深和更复杂的孔和槽。
Deeper and more complicated holes and slots can be casted by using soluble wax cores and ceramic cores.

 3、角度公差 Angle Tolerance

角度形式
Angle Type
一般公差 Normal ±1o ±2o ±2o
特殊公差 Premium ±0.5o ±1o ±1o
铸件结构应避免急剧变化,尽可能避免尖角,圆角应达到R0.3以上。
Avoid the quick changes of casting structure, use fillet radius on internal angle when possible, which is no less than R0.3.

 4、平面度、直线度、圆度公差 Tolerance for Flatness,Straightness and Roundness

铸件尺寸(MM) Dimension 一般公差 Normal 特殊公差 Premium
0-25 0.2 0.1
25-50 0.4 0.2
50-100 0.6 0.3
100-150 0.8 0.4

 5、大小和重量范围 Size and Weight Range

项目 Items 范围 Size 最优 Premium
轮廓尺寸(mm) Outline Dimension 1000X620X380 < 100
重量(Kg) Weight 0.001-80 0.1-1.5
最小壁厚(mm) Main Wall Thickness 0.5 5-10

 6、表面粗糙度(Ra/µm) Surface Roughness

铸造状态
Rough Castings
重量(Weight) > 5Kg
主要壁厚(MialWallThinckness)>12mm

3.2-6.3


我公司有能力对铸件表面作以下精整处理,对于碳钢和低合金钢,可以作发黑、镀锌、镀铬、镀镍处理;对于不锈钢,可作研磨、手工拉丝抛光及镜面抛光、电抛光、钝化处理;所有钢种可作喷砂(玻璃砂、钢玉砂、石英砂)处理。
THe surface finish for the castings we can provide with are as the following: Blacking,zine plating, chrome plating and nichel plating for the carbon steel and the low alloy steel castings; Tumbling, hand dull polishing,mirror polishing, electrolytic polishing and passivation treatment for the stainless steel castings and sandblasting, including glass bead blasting, corundum-sand blasting and quartz-sand blasting form all the steel castings.

重量(Weight) < 5Kg
主要壁厚(MialWallThinckness)<12mm
1.6-3.2
重量(Kg)
Weight
0.8-1.6

Copy Right ©Reserved: SMC   MARINE  &  FISHING   EQPT   CO.LTD    Support: http://www.0546.net.cn   ICP:06034847