The role of non-zinc metal addition during galvanizing

The role of non-zinc metal addition in galvanizing process Baifeng Steel has two hot-dip galvanizing plants: Shengtai galvanizing plant and Lifeng galvanizing plant. Mainly engaged in galvanized angle steel, galvanized channel steel, galvanized flat steel, galvanized round steel, galvanized I-beam and other products.

The role of non-zinc metal addition during hot dip galvanizing is as follows:




1. Adding zinc, aluminum and gold to improve the brightness of the galvanized layer



Due to the high temperature of the zinc solution, the Zn-Fe alloy phase layer continues to grow after the zinc liquid is extracted from the workpiece. The mixed structure of the Zn-Fe alloy phase layer and the pure zinc layer is formed on the surface of the workpiece, and the surface of the galvanized layer is light gray. Adding aluminum (containing aluminum in an amount of about 0.03% to 0.05%) can obtain a relatively bright galvanized layer. This is the same as the low-temperature batch hot-dip galvanizing, but the high-temperature hot-dip galvanizing process has a higher aluminum content than the low-temperature batch hot-dip galvanizing.



2. Adding zinc alloy to prevent excessive oxidation of zinc liquid



In the high-temperature hot-dip galvanizing process, the oxidation of zinc liquid is further aggravated under high temperature conditions. Therefore, the addition of aluminum can reduce the oxidation rate of zinc liquid.



3. Add lead to improve the adhesion strength of galvanized layer



In the high-temperature hot-dip galvanizing process, the phase thickness of the Zn-Fe alloy phase layer is larger than that in the low-temperature batch hot-dip galvanizing process, so the brittleness of the galvanized layer is increased and the adhesion is lowered. At this time, the lead addition can improve the high-temperature hot-dip galvanizing. The galvanized layer has insufficient adhesion.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn

Slewing Bearing

Swing bearing

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Name slewing ring bearing / Excavator SWING CIRCLE
Suitable Brand Excavator
Suitable Model Excavator
Original China
AplliCartion Excavator
Warranty

One year

Delivery time wihtin 3 days after payment confirmed
MOQ 1 set
Packing standard export carton & wooden case or as your require

Many types of excavator slewing bearing for your purchase.

Excavator Brand

Model No.

Excavator

PC30

PC40

PC60-6 (Z=76)

PC60-6 (Z=80)

PC60-7 (Z=76)

PC70-7

PC75U

PC90

PC90-6

PC100-5

PC120-5

PC120-6 (4D95)

PC120-6 (4D102)

PC130-7

PC128UU

PC150-5

PC20HT

PC200-1

PC200-2

PC200-3

PC220-3

PC220-5

PC200-6 (S6D95)

PC200-6P (S6D102)

PC200-7 (Z=92)

PC220-7

PC228UU

PC300-2

PC300-3

PC300-5

PC300-6

PC300-7

PC350-6

PC360-7

PC400-3

PC400-5

PC400-6

PC450

Excavator

HD450-7

HD512

HD100

HD700-1

HD700-2

HD700-5

HD700-7

HD770SE

HD770-1

HD770-2

HD800-7

HD820-1

HD900-7

HD1250-5

HD250-5

HD250-7

HD307

HD516

HD400-7

HD450-5

Excavator
Excavator

EX60-1

EX60-2

EX60-3

EX60-5

EX90

EX100-1

EX100-3

EX100-5

EX120-1

EX120-2

EX200-3

EX200-5

EX210-5

ZX120

ZX160

EX200-1

EX200-2

EX200-3

EX200-5

EX210-5

ZX200

ZX200-3

ZX225

EX220-5

ZX230

ZX240

ZX270

EX300-1

EX300-2

EX300-3

EX300-5

ZX330

EX450

ZX480

Excavator

DH55-5

DH60-7

DH150-7

DH200-3

DH220-3

DH102

DH225-7

DH258-7

DH280

DH290

DH300-5

DH320

DH330-3

DH360-5

DH500

Excavator

SK03

SK09

SK907B

SK100

SK120-5

SK200-1

SK200-2

SK200-5

SK200-6

SK200-8

SK230-6

SK300

SK350-8

Excavator

SH120A2

SH120A3

SH200A1

SH200A2

SH200A3

SH200G3

SH200C3

SH210A3

SH220A1

SH225

SH260

SH265

SH280

SH300/A2

SH340

SH350

SH430

SH40T

SH580

Excavator

R60-5

R60-7

R80-7

R130-5

R130-7

R140

R150W

R170

R200

R210-3

R220-5

R210-9

R215-7

R225-7

R245

R260-5

R280

R290

R300

R305-7

R320

R335-7

R360

R450

Excavator

EC55

EC210

EC240

EC290 EC360

Excavator swing bearing is divided into various specifiCartions:


1.single-row ball slewing bearings with outer teeth or inner teeth , or without teeth;

2.single-row cross roller slewing bearings;

3.double-row different diameter balls slewing bearings;

4.three-row roller slewing bearings and etc.


AppliCartion:


1.Construction Machinery : Cranes, Excavators

2.Mining/Heavy Equipments

3.Port/Marine/Offshore Machinery

4.Forest Industries Equipment


The single-row four points contact ball Slewing Bearing is composed of 2 seat-rings.It features compact in design,and light in weight.

The balls contact with the circular race at four points,via which the axial force,radial force and resultant moment may be born simultaneously.

It may be used for slewing conveyers,welding arms and positioners,light,medium duty cranes,excavators and other engineering machines.

Slewing Ring Bearing Features:

1.High load-carrying capability

2.Ability to accept the combined loads;axial ,radial and tilting moments

3.Flexibility with product design.

4.42CrMo/50Mn material be used to make slewing ring bearing


Product Catalog


1. Single row four point contact ball series.
2. Single-row crossed roller series.
3. Double row ball series.
4. Three-row roller series.
5. Roller and ball combination series.
6. Lightweight outline slewing ring.

Slew bearing for Single-row ball(HS Series)

1. Id:320-4500 Od:550-4500mm
2.material: 52Mn,42CrMo
3.OME service
4.ISO9001-2000 certifiCarte
5.R&D capacity

6.Tolerance:ABEC-1 standard

7.Basic loading rating:Dynamic & Static depend on different model

Dimensions

Mount dimensions

Number of holes

Gear parameters

Designation

mm

mm

m

mm

z

mm

D

d

T

H

h

D1

d1

dn

n

n1

Da

b

662

458

80

70

10

626

494

18

20

4

5

689

135

60

011.30.560

662

458

80

70

10

626

494

18

20

4

6

688.8

112

60

012.30.560

732

528

80

70

10

696

564

18

24

4

6

772.8

126

60

011.30.630

732

528

80

70

10

696

564

18

24

4

8

774.4

94

60

012.30.630

812

608

80

70

10

776

644

18

24

4

6

850.8

139

60

011.30.710

812

608

80

70

10

776

644

18

24

4

8

854.4

104

60

012.30.710

922

678

100

20

10

878

722

22

30

6

8

966.4

118

80

011.40.800

922

678

100

20

10

878

722

22

30

6

10

968

94

80

012.40.800

1022

778

100

90

10

978

822

22

30

6

8

1062.4

130

80

011.40.900

1022

778

100

90

10

978

822

22

30

6

10

1068

104

80

012.40.900

1122

878

100

90

10

1078

922

22

36

6

10

1188

116

80

011.40.1000

1122

878

100

90

10

1078

922

22

36

6

12

1185.6

96

80

012.40.1000


Crane Slewing Bearing,Turntable Slewing Ring Bearing,Excavator Turntable Slewing Ring Bearing,,Four Point Slewing Ring Bearing

Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.longsbearing.com

June 21, 2023