🔧The H-Link connects the bucket cylinder to the bucket and controls the crowding of the bucket.
⚙️The H-Link is made from a special material that is difficult to weld and machine.
💪Repairing the H-Link requires precise machining and fabrication.
🔩Alternative repair options include welding with high nickel or using a sleeve.
🎨The H-Link is given a fresh coat of paint after fabrication to ensure durability and protection.
Why is the material of the H-Link difficult to weld?
—The material used for the H-Link is unusual and does not adhere well to standard welding techniques. Welding with high nickel is attempted but not successful due to poor adhesion.
What are the alternative repair options for the H-Link?
—Two alternative repair options for the H-Link are welding with high nickel or using a sleeve. However, welding with high nickel proves to be unsuccessful, and using a sleeve would result in the loss of structure and potential cracking.
Why is line boring necessary for the H-Link?
—Line boring is necessary to ensure a proper fit for the new bushes in the H-Link after fabrication. It allows for precise alignment and smooth movement.
What is the purpose of the fresh coat of paint?
—The fresh coat of paint on the H-Link after fabrication helps protect the metal from corrosion and extends its durability.
Why is the H-Link an essential component of an excavator?
—The H-Link connects the bucket cylinder to the bucket and controls the crowding of the bucket, allowing for efficient and precise excavation.
00:20Introduction to the H-Link and its role in connecting the bucket cylinder to the bucket.
01:19Challenges of welding the unusual material of the H-Link and the need for alternative repair options.
02:43Overview of the materials used for the new H-Link and their significance in the fabrication process.
03:34Machining the hollow bar to fit the new bushes and ensuring precise dimensions for proper alignment.
06:03Facing and machining the ends of the hollow bar to create a true surface for fitting and attaching other components.
10:11Boring the ID of the hollow bar to create clearance for the pins and ensure smooth movement.
11:55Turning down the OD of the hollow bar and preparing the other two smaller hollow bars for machining.
23:36Facing the end of the hollow bar and preparing for machining the other side.
