- Power Tools
-
Saws
Chain Saw Concrete Chain Saw Band Saw Reciprocating Saw ...
-
Cutters
Pneumatic Cutter Pipe Cutting Machine Nut Cutter
-
Drills
Hammer Drill Pistol Hammer Drill Two Hand Operation Drill Column Drill ...
-
Impact Wrenches
Pneumatic Impact Wrench (Ex-proof Series) Pneumatic Impact Wrench (Ultra light Series) Emulsion Impact Wrench Nut Runner ...
-
Torque Wrenches
Pneumatic Torque Wrench Electric Torque Wrench Hydraulic Torque Wrench Hollow Hydraulic Wrench ...
-
Mining Waterjet Cutting Machine
Electric Mining Waterjet Cutting Machine Pneumatic Mining Waterjet Cutting Machine Emulsion Mining Waterjet Cutting Machine
-
Hammers
Pneumatic Chipping Hammer Hydraulic Chipping Hammer
-
Scaler
Pneumatic Long Reach Scaler
-
Rammer
Pneumatic Rammer
-
Grinders
Wet Grinder Angel Grinder Electric Grinder
-
Fan
Pneumatic Fan Heavy Fixed Fan
-
Hoist
Chain Hoist Electric Hoist Pneumatic Hoist Hydraulic Hoist ...
-
Winch
Pneumatic Winch
-
Pump
Pneumatic Submersible Pump Emulsion Submersible Pump
-
Assembly
Torque Multipler C-Hog Ring Plier
-
- Accessories
-
Cutting
Chainsaw Concrete Chainsaw Band Saw Reciprocating Saw ...
-
Drilling
Impact Drills Light Drills Magnetic Drills丨Rail Drills Balance Drills丨Angle Drills ...
-
Assembly
Impact Wrenches C-Hog Ring Plier
-
Hammer & Shovel
Chipping Hammer Derusting Shovel
-
Grinding
Grinders
-
Hydraulic Accessories
Nut Runner Cutter
-
General Accessories
Waterjet Cutting Machine Filter assy. Filter assy. Water Pump ...
-
- Company Profile
- Service
- News
-
Events
The 21st 2023 Taiyuan Coal (En The 17th Yulin International C The 20th TaiYuan (2021) Coal ( The 16th Ordors International Have a machine repaired or hav ...
-
Case Study
Specifications of adjustable w Have a machine repaired or hav
-
Industry News
Using Chainsaws to Cut Snow? What to do if the pneumatic wr Hydraulic chain saw Operation of the wrench Introduction to the principle ...
-
- Download
- Contact
You are here: >
The occurrence of cracks in the casting of hydraulic wrench forgings!Hollow hydraulic wrench
source:Industry News release time:2022-04-08 Article author:Rosit Popular:Air band saw
When the hydraulic wrench is forged and deformed, due to the low temperature or too fast deformation speed, and too fast cooling after forging, the softening caused by recrystallization may not keep up with the strengthening (hardening) caused by deformation, so that the interior of the forging after hot forging still remains. Part of the cold deformation structure is preserved. The existence of this structure increases the strength and hardness of the forging, but reduces the ductility and toughness. Severe chilling phenomenon may cause forging cracks.
Cracks are usually caused by large tensile stress, shear stress or additional tensile stress during forging. The part where the crack occurs is usually the part where the stress of the billet is relatively large and the thickness is relatively thin. If there are micro-cracks on the surface and inside of the billet, or there are structural defects in the billet, or improper hot working temperature reduces the plasticity of the material, or the deformation speed is too fast, the deformation degree is too large, and exceeds the allowable plasticity index of the material, etc. Cracks in hydraulic wrenches may occur in processes such as drawing, punching, reaming, bending and extrusion.
Crack: The crack of the hydraulic wrench is a shallow tortoise-like crack on the surface of the forging. Surfaces that are tensile stressed during forging forming (eg, underfilled bulges or bent portions) are more prone to such defects. The internal causes of cracking may be multi-faceted: for example, too many fusible elements such as raw materials, Cu, Sn, etc. When heated at high temperature for a long time, copper precipitation, coarse surface grains, decarburization, or multiple heating surfaces may occur on the surface of the steel. In addition, the sulfur content of the fuel is too high, and there is sulfur infiltration on the surface of the steel material.
Flash cracks: Flash cracks are cracks generated at the parting surface during die forging and trimming. The reason for the flash crack of the hydraulic wrench may be: in the die forging operation, the strong flow of the metal caused the piercing phenomenon. The trimming temperature of magnesium alloy die forgings is too low, and the trimming temperature of copper alloy die forgings is too high.
Parting surface cracks: Parting surface cracks refer to cracks generated along the parting surface of forgings. There are many non-metallic inclusions in the raw materials, and the hydraulic wrench flows to the parting surface during die forging and concentrates or shrinks the tube residue, which often forms parting surface cracks after the flash is squeezed during die forging.
Read recommendations:
related articles
Using Chainsaws to Cut Snow?
2024-05-21What to do if the pneumatic wrench is weak
2022-12-19Hydraulic chain saw
2022-12-13Operation of the wrench
2022-12-06Introduction to the principle of pneumatic wrench
2022-11-28How to use the pneumatic wrench
2022-11-21Brief introduction to the principle of pneumatic wrench
2022-11-14Impact pneumatic wrench
2022-11-07Correct hydraulic wrench operation procedure
2022-11-01Hydraulic wrench torque pressure conversion
2022-11-01Field operation procedure of hydraulic wrench
2022-10-24Hydraulic radial plunger motor
2022-10-17The history of hydraulic motors
2022-10-17Principle of balance hydraulic wrench
2022-10-10The Price Factor of Smart Electric Torque Wrench
2022-10-10Introduction to the advantages of using intelligent electric torque wrench
2022-10-10The Price Factor of Smart Electric Torque Wrench
2022-10-10Classification and use of wrenches
2022-10-10hydraulic wrench pressure conversion
2022-10-10Introduction to the advantages of the use of intelligent electric torque wrench
2022-10-10Smart Electric Torque Wrench Selection Guide
2022-10-10Intelligent electric torque wrench for wind power generation
2022-10-09Uses of open-end wrenches.Pneumatic chainsaw
2022-10-08What are the driving parts of a hydraulic wrench and what they do
2022-09-30What are the driving parts of a hydraulic wrench and what they do
2022-09-23the commonly used wrenches
2022-09-22Introduction of several common wrenches
2022-09-21Application scope and daily maintenance method of hydraulic bolt tensioner
2022-09-20Characteristics of hollow hydraulic wrench and precautions for use
2022-09-19Characteristics and precautions of driving hydraulic wrench
2022-09-17Power Tools
AN23-2500 Pneumatic Torque Wrench (Angle Shaft)
2024-03-12OF23-880 Pneumatic Fan/ (light/medium)
2023-06-28CB11-260 Electric Band Saw
2023-06-16CC22-380 Pneumatic ChainSaw (5.0KW Series)
2020-06-13AK22-110 Pneumatic C-Hog Ring Plier (2.0 coil)
2023-06-29AK51-030 Pneumatic C-Hog Ring Plier (Charging/Manual 1.5 coil)
2022-12-12AN23-1800 Pneumatic Torque Wrench (Angle Shaft)
2024-03-12RH31-1400 Hydraulic Chipping Hammer
2023-06-27AN22-750 Pneumatic Torque Wrench (Straight Shank)
2020-06-13DP22-200 Pneumatic Column Drill
2023-06-19DM11-120 Electric Magnetic Drill
2023-06-19CB11-210 Electric Band Saw
2023-05-18AN23-8000 Pneumatic Torque Wrench (Angle Shaft)
2024-03-12LH61-015 Emulsion Hoist
2023-06-29CS31-180 Hydraulic Handheld Circular Saw
2021-06-15CB31-160 Hydraulic Band Saw
2023-06-16CB22-200 Pneumatic Band Saw - Stainless Steel Series
2023-06-16AN22-4500 Pneumatic Torque Wrench (straight shaft)
2023-06-27RH21-2500 Pneumatic Chipping Hammer
2021-06-15CS21-065 Pneumatic Handheld Circular Saw
2021-06-08CB21-160 Pneumatic Band Saw - Aluminum Alloy Series
2023-06-16CS21-180 Pneumatic Handheld Circular Saw
2020-06-13AN21-270 Pneumatic Nut Runner
2023-06-21RZ21-035 Pneumatic Rammer
2023-06-27DB21-070 Pneumatic Rotary Drill Heavy Duty
2023-06-19AN31-120000 Hydraulic Torque Wrench
2023-06-27DP61-140 Emulsion Two Hand Operation Drill
2023-06-19AN51-1600 Electric servo CNC Torque Wrench
2023-06-27AN32-10000 Hollow Hydraulic Wrench
2023-06-27DP21-060 Pneumatic Two Hand Operation Drill
2021-06-15Accessories
Carbide Hollow Bits丨DM816 Series
2023-06-06Alloy Drill Bits丨813 Series
2023-06-06Alloy Saw Blades丨CR811-150/152
2023-06-06Hydraulic Pump Station
2023-06-07Alloy Twist Drill Bits丨DB81 Series
2023-06-06Ex-proof Sleeves KIT
2023-06-07Cross Clamps丨CB862-22
2023-06-06Alloy Saw Blades
2023-06-06Hard Alloy Hollow Drill Bits assy.丨DB85 Series
2023-06-07Split Hollow Drill Bits丨DC82
2023-06-07Shovel Blades
2023-06-07Carbide Hollow Bits丨DM818 Series
2023-06-06Filter assy.
2023-06-07Oiler
2020-06-13Guide Bars
2023-06-06Abrasive Blades
2023-06-07Alloy Sleeves
2023-06-07Tool Bits
2023-06-07Carbide Hollow Rail Drill Bits丨DM822 Series
2023-06-06Tool Bits
2023-06-07Hard Alloy Hollow Drill Bits assy.丨DB84 Series
2023-06-07Core Drill Morse Taper Sleeves
2023-06-07Sleeve KIT
2023-06-07Carbide Inserts Twist Bits assy.丨DB83 Series
2023-06-07Alloy Saw Chains丨CC812/CC816 Series
2023-06-06Optional Accessories
2023-06-07Diamond Saw Blades
2023-06-06Grinding Disc
2023-06-07Non-metallic Alloy Saw Blades
2023-06-06Carbide Inserts Twist Bits丨DB82 Series
2023-06-06
