betek trenching training 2015
TRANSCRIPT
BETEK GmbH & Co. KG · Titel der Präsentation · 11.06.2012
Weiterkommen!
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Table of Contents:
• Trenching machine Types
• Wear Parameters / Overview
• Cutting Tool Parameters
• Tool dimensions
• Fixing Systems
• Tungsten Carbide Grade/ Shape
• Wear Patterns
• Cutting Tool Overview and Selection
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
„Big“ Machine Types:
Chain Trenching Machine Wheel Trenching Machine
Bucket Trenching Machine
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BETEK Training Presentation
Trenching
„Big“ Machine Types:
Terrain Levelling Machine
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
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Trenching
„Small“ Machine Types:
Chain Trenching Machine
Wheel Trenching Machine
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Influences on pick wear:
• Cutting speed
• Cutting pressure
• Material strength
• Material characteristic
• Abrasion
• Density
• Quartz contents
• Cooling
• Weather
• Rotation
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Cutting tool parameters/ components:
Tungsten Carbide style / gradeHead length
Head diameter
Shank diameter
Shank styleFixing system
Steel hardness
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Shank Systems:
Straight Shank Ø11/ 14/ 18,65/ 19,4/ 20/ 22/ 25,4/ 30mm:
Step Shank 38/30mm:
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
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Trenching
Fixing Systems:
internal Systems:
Clip Ring (short retainer)
Sleeve (long retainer)
external Systems:
Snap Ring (Seeger ring)
Lock Ring
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Fixing Systems (internal Systems):
Clip Ring (short retainer) Sleeve (long retainer)
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Fixing Systems (external Systems):
Snap Ring (Seeger ring) Lock Ring
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Installation of external lock rings with BETEK device BZ35:
Device: BZ35
Lock ring: SI35/22
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Disassembly of external lock ring SI35/22 with tool BZ34
Device: BZ34
Lock ring: SI35/22
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Head Shapes:
Bottom diameter influences:
Toolholder protection
Resistance against breakage
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Head Shapes:
Head Length influences:
Penetration
Granulate size
Productivity
Toolholder protection
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Head Shapes: The head length influences the toolholder protection
64 mm
77 mm
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Tungsten Carbide Shapes:
Cylindrical Style:
Maximum toughness
For hard condition
Heavy impacts
Cap Pin Style (CP):
Good abrasion resistance
Medium protection of the steel body
Reducing steel wash
Medium hard condition
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Tungsten Carbide Shapes:
Cap Style
Best abrasion resistance
Good protection of the steel body
Reducing steel wash
Soft to medium hard condition
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
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Trenching
Tungsten Carbide Grade: B10G
Tungsten Carbide: 94%
Cobalt: 6%
Ø Grain Size: 20µm
High wear resistance!
Tungsten Carbide Grades:
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
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Trenching
Tungsten Carbide Grade: B20G
Tungsten Carbide: 91,5%
Cobalt: 8,5%
Ø Grain Size: 20µm
High wear resistance!
Tungsten Carbide Grades:
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Trenching
Wear pattern on Tungsten Carbide Inserts:
Broken tungsten carbide:
Wrong TC-Grade
Ø too small
Heavy impact on „steelbars“ or r boulders
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Reptile Skin:
Less TC wear
High and many temperature changes
Wear pattern on Tungsten Carbide Inserts:
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Trenching
Chain design for „Hard Rock“ application:
Full coverage pattern
Ejector plate Side cutter
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Trenching
Wear pattern:
Bad rotation of the cutting tool:
Too small axial clearance
Too small radial clearance
Sticky material
Worn tool holder
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
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Trenching
Worn tool holder by:
Broken cutting tools
To late monitoring of the cutting b tool wear
Result:
No proper seat for new tools
Easy shank breakage
Non rotating tools
Replacement of the tool holder necessary!
Wear pattern:
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
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Trenching
Wear pattern broken cutting tool:
Reasons:
Not professional heat treatment d (to hard and brittle)
Heavy shock
Head length to much
Shank system to small
Improvements:
Reduction head length
Increase the holder system
(if possible)
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Wear pattern:
Bad rotation of cutting tools by:
Sticky material
Unproper cleaning of the 00 tool holders bore hole
Clean always the bore hole before fixing a new cutting tool!
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
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Trenching
A large axial clearance by worn tool holder:
Demolition of the snap ring
Breakage of the snap ring
Replacement time for thecutting tools will increase
High risk of tool loss
Wear pattern:
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Wear pattern:
Replacement time for thecutting tools will increase
High risk of tool loss
A large axial clearance by worn tool holder:
Demolition of the snap ring
Breakage of the snap ring
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Toolholder with groove for clip ring:
Depose of material in the groove
Prevents tool from rotation
Using tool holder without iiiiigroove when not required!
Wear pattern:
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
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Trenching
Soft material: Means less wear on the TC
The tools are longer on the chain -> longer time for steel wear
Breaking out or loss of cylindrical TC pins
Solution: Cap Style TC
Wear pattern:
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Cap Style TC
Head Ø = Holder Ø
Optimum TC wear
Wear of steel and TC are vvvcorresponding
Economic tool
Wear pattern:
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Cylindrical TC in Soft Conditions:
Head Ø = Holder Ø
TC is not protecting the steelbody
Risk of TC loss
Cap style Tungsten Carbide tip recommended!
Wear pattern:
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Proper rotating cutting tool with cap style tip:
Tungsten carbide used iiiiialmost to the end
Tool holder protection iiiiicould be better
Wear pattern:
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Cap style TC tip broken by bolders, used on side cutters
Wear pattern:
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
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Trenching
Side cutters with larger Carbide Tip Ø 25mm CP Style
BKF36
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Trenching
Side cutters with larger carbide tip Ø and larger steel body
BKF11
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Trenching
BKF12 (Ø19mm) in the middle of the chain
BKF11(Ø22mm) on the side cutters
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Additional protection of the Chain Base Plate
Weld on tooth: BFZ35M reduces the rewelding efforts
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
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Trenching
Additional protection of trenching wheels with TungStuds
Side protection on fast running wheels
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
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Trenching
Additional protection of trenching chains with TungStuds
Side protection on every second plate
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Overview BETEK Product Series
Shank Ø sleeve short retainer external snap ring external lock ring
11 BM
14 BM BM
18,65 BTR BTR
19,4 BSH BSK BC
20 BSH
22 BC BC
25 BTK BTK
30 BGK BGS BGF
38/30 BKH BKS BKF
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
BETEK Product Series: BTK/B40
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BETEK Training Presentation
Trenching
BETEK Product Series: BTK/BG25F
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BETEK Training Presentation
Trenching
BETEK Product Series: BKF/BS38F
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Walk behind Trencher: Weld on tooth :
BFZ87
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
BETEK GmbH & Co. KG · Trenching Training · 20.01.2015
BETEK Training Presentation
Trenching
Thank you for your attention!