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شرکت پیشتاز تدبیر استیل پارس - ساچمه کروی

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k u 1

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بازدید کنندگان


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ساچمه فولادی

ساچمه فولادي به وسيله ذوب ضايعات انتخابي دركوره القايي توليد مي شود .تركيب شيميايي فلز ذوب شده تجزيه شده و به وسيله دستگاه اسپكترومتر كنترل ميشود تا با ويژگيهاي موردنظر استاندارد BS EN ISO 11124-3 مطابق باشد. فلز ذوب شده به وسيله اتمايزينگ به ذرات گرد تبديل شده و سپس وارد آب شده و به وسيله پروسه حرارتي به سختي و ساختار ميكروسكوپي مورد نظر مي رسد و درنهايت از الك عبور داده مي شود تا به سايز هاي مطابق با استاندارد BS EN ISO 11124-3  برسد.

شات بلاست معمولترين روش جهت تميز كاري ، خشن كاري، بهبود سطوح  فلزات مي باشد.

سايز يا گريد ساچمه فولادي مشخص كننده ويژگيهاي نهايي سطوح فلزي مي باشند كه تحت عمليات بلاست قرار گرفته اند .شكل كروي ساچمه فولادي باعث تسريع عمليات بلاست مي باشد .ساچمه هاي فولادي كوچكتر ، سطوح را بهتر پوليش كرده و سطوح صافتري را ايجاد مي كنند .ساچمه هاي بزرگتر سطوح را به صورت خشن تميز كرده و سطوح زبرتري را ايجاد مي كنند . بسته به سختي و تراكم  ( دانسيته )  ساچمه فولادي تا  3000  بار قبل از تعويض ،  قابل استفاده مي باشد.

 

 

ترکيب شيميايي، ريزساختار و سختي ساچمه ها (%)

 

عنصر

S

P

Mn

Si

C

min density

hardness

درصد

<0.05

<0.05

1  -1.2

0.1 – 0.6

0.80 - 1.20

0.7 g/cm3

390-530HV

    سایزبندی :

Product

 % : min & max cumulative percentages allowed on corresponding sieves

size (mm)

S930

all pass

 

85% min

97% min

 

 

 

 

 

 

 

 

 

 

 

 

 

2.4 - 3.4

S780

 

all pass

 

85% min

97% min

 

 

 

 

 

 

 

 

 

 

 

 

2.0 - 2.8

S660

 

 

all pass

 

85% min

97% min

 

 

 

 

 

 

 

 

 

 

 

1.7 - 2.4

S550

 

 

 

all pass

 

85% min

97% min

 

 

 

 

 

 

 

 

 

 

1.4 - 2.0

S460

 

 

 

all pass

5%  max

 

85% min

96% min

 

 

 

 

 

 

 

 

 

1.2 - 1.7

S390

 

 

 

 

all pass

5%  max

 

85% min

96% min

 

 

 

 

 

 

 

 

1.0 - 1.4

S330

 

 

 

 

 

all pass

5%  max

 

85% min

96% min

 

 

 

 

 

 

 

0.85 - 1.2

S280

 

 

 

 

 

 

all pass

5%  max

 

85% min

96% min

 

 

 

 

 

 

0.71 - 1.0

S230

 

 

 

 

 

 

 

all pass

10%  max

 

85% min

97% min

 

 

 

 

 

0.6 - 0.85

S170

 

 

 

 

 

 

 

 

all pass

10%  min

 

 

80% min

97% min

 

 

 

0.42 – 0.6

S110

 

 

 

 

 

 

 

 

 

 

all pass

10%  min

 

 

80% min

90% min

 

0.3 - 0.5

SAE Sieve  No.

6

7

8

10

12

14

16

18

20

25

30

35

40

45

50

80

 

Aperture

3.38

2.80

2.36

2.00

1.70

1.40

1.18

1.00

0.85

0.71

0.60

0.50

0.425

0.355

0.30

0.18