Mold welding repair process points

Forging companies need the necessary equipment and the right training to ensure the correct welding repair process, including the right welding materials, welding power, welding aids, cranes, electric furnaces. On this basis, the correct welding process includes the following 9 points:

1. Mold cleaning and inspection The cleaning and inspection of the mold to be repaired is the basis for determining the correct welding repair process. After cleaning, according to the inspection results, the welding repair process is determined, including the type and quantity of the welding consumables. Combine for repair purposes.

2. Before cleaning the cavity, thoroughly clean the cracks, scales, fatigue layer and all impurity materials in the cavity, and clean out enough openness. Generally, it needs 40-60 angle to ensure the welding rod or welding wire can be normal. Deposition.

3, the important step of successfully repairing the mold before heating before welding, the heating temperature is 800-900 Â°F, calculated and insulated according to the thickness per inch, the total number of weldments in the heating furnace or heating flame depends on the insulation material The mass and the heating value of the heated flame.

4. The position of the weldment weldment must ensure that the welder is allowed to operate in the area to be welded. Sometimes the position of the weldment needs to be constantly adjusted during the welding process, but the centerline of the cavity to be welded must be perpendicular to the ground. Short arcs are used for welding to ensure that the weld wall is intimately integrated with the weld material and the weld wall must be within the welder's line of sight.

5. Post-weld tapping After each weld bead is finished, it must be hit by pneumatic or mechanical means to achieve the best crystal phase structure of the cladding layer and prevent the weldment from shrinking along the centerline during cooling.

6. After heating and normalizing, the heating and normalization is 800-900 Â°F, and the thickness is 1 h per inch. The purpose is to prevent the workpiece and cladding layer from cooling too fast.

7. Slow cooling and slow cooling means that the weldment is slowly cooled to room temperature in an air-stationary environment. The purpose of slow cooling is to achieve a balanced microscopic crystal phase structure and toughness, so as to achieve the best effect in the forging process.

8. The purpose of tempering to remove stress is to remove the stress generated in the welding, and finally reach the toughness required by the mold and the hardness of the cladding layer. The tempering time is calculated by 1 hour per inch of thickness.

9. The final step of the final cooling welding is to let the weldment cool down to room temperature in a static air environment. The weldment can be coated with a heat insulating material to enhance the slow cooling effect.

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UCT Series Bearing

Product Name	ASAHI Pillow Block Bearing UCT 205 bearing UCT205
Brand	WST / NSK / NTN / KOYO / ASAHI / OEM
Model Number	UCT205
Material	Chrome steel / Stainless Steel
Precision	P0, P6, P5, or as requested
Vibration	ZV1, ZV2, ZV3, or as requested
Clearance	C0,C2,C3, or as requested
Features	Compact structure, sensitive rotation and easy maintenance etc.
Quality standard	ISO9001:2000/ SGS
Quality Control Process	1.Assembly
	2.Windage test
	3.Cleaning
	4.Rotary test
	5.Greasing and gland
	6.Noise inspection
	7.Appearance inspection
	8.Rust prevention
	9.Product packaging
Application	Bearings for agricultural machinery, bearings for food processing and packaging, bearings for mining machinery, bearings for construction machinery