CN103008524A - Method for forging step shaft with electroslag ingots - Google Patents

Abstract

The invention relates to a method for forging a step shaft with electroslag ingots. The method is suitable for forging the step shaft with large step diameter. A dead head end of an electroslag ingot is disposed on a upsetting drain cap for upsetting. The upset dead head end of the electroslag ingot forms a drum-shaped convex face and is elongated, due to the fact that the dead head end is the drum-shaped convex face, the dead head end is less prone to sinking, only a small part of dead head end needs to be cut off at last, pliers handle pressing with a hydraulic press in the original method is omitted, and the method has the advantages that the method is material-saving, utilization rate of forged piece is improved, and production cost is lowered.

Description

A kind of forging method of ESR ingot forging and pressing Step Shaft

Technical field

The present invention relates to a kind of forging method, be particularly useful for the forging method of a kind of ESR ingot forging and pressing Step Shaft of the large Step Shaft of stepped diameters.

Background technology

In the forging method of existing ESR ingot Step Shaft, as shown in Figure 1, ESR ingot forms rising head end 101 by the molten bath cooling after ingot casting finishes, described rising head end 101 shrinks the concave surface that forms for the solution cooling, then forge, deepen along with forging ratio strengthens this concave surface, finally form shrinkage hole, as shown in Figure 2, for fear of not producing shrinkage hole, at first utilize manipulator to extrude pincers with the ESR ingot of rising head end 102, in order to guarantee forging ratio, as shown in Figure 3, then will clamp the center that places jumping-up drain cap 2 to 102, and by hydraulic press ESR ingot be carried out guaranteeing forging ratio behind the jumping-up, pull out by manipulator at last, because rising head end concave surface has been swaged into the pincers handle, after the final Step Shaft completion, pincers and the rising head end all excise, but this way waste material, the forging utilization rate is low, has greatly improved production cost.

Summary of the invention

The applicant provides the forging method of another kind of ESR ingot forging and pressing Step Shaft for these shortcomings in the above-mentioned existing production, has economical with materials, improves the advantage of forging utilization rate and production cost.

The technical solution adopted in the present invention is as follows:

A kind of forging method of ESR ingot forging and pressing Step Shaft is characterized in that may further comprise the steps:

The first step: ESR ingot is placed on the jumping-up drain cap, and described ESR ingot rising head end is downward;

Second step: utilize hydraulic press to the ESR ingot jumping-up, form cydariform behind the described ESR ingot rising head end jumping-up;

The 3rd step: utilize manipulator that the described ESR ingot of step 2 is pulled out;

The 4th step: the rising head end that forms on the described ESR ingot of excision step 2.

Beneficial effect of the present invention is as follows:

The inventive method places the rising head end of ESR ingot on the jumping-up drain cap, then carries out jumping-up, so that form the cydariform convex surface behind the rising head end jumping-up of ESR ingot, has satisfied upset ratio.Then pull out, this moment is because the rising head end is the cydariform convex surface, in the pulling process, be difficult for recessed contracting, the last excision fraction rising head end that only needs gets final product, the method has been saved the step of original hydraulic press pressing tongs handle simultaneously, time saving and energy saving, economical with materials has improved forging utilization rate and enterprise's production cost greatly.

Description of drawings

Fig. 1 is the structural representation of existing ESR ingot.

Fig. 2 in the existing method with the schematic diagram of ESR ingot pressing tongs handle.

Fig. 3 in the existing method with the schematic diagram of ESR ingot jumping-up.

Fig. 4 is the schematic diagram that in the inventive method ESR ingot is placed on the jumping-up drain cap.

Fig. 5 is with the structural representation behind the ESR ingot jumping-up.

Fig. 6 is the structural representation after the ESR ingot pulling.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.

The inventive method may further comprise the steps:

The first step: as shown in Figure 4, will place on the jumping-up drain cap 2 with the ESR ingot 1 of rising head end 101.

Second step: utilize hydraulic press that ESR ingot 1 is carried out jumping-up because jumping-up drain cap 2 is provided with inner concave, after ESR ingot 1 is subjected to the hydraulic press jumping-up so that ESR ingot 1 rising head end 101 jumping-ups after form the cydariform convex surface, the cydariform convex surface is as shown in Figure 5.

The 3rd step: utilize the jaw of manipulator to clamp the described ESR ingot of step 2, described ESR ingot is pulled out, because ESR ingot rising head end is the cydariform end face, in the pulling process, can not produce recessed contracting.

The 4th step: excise at last the rising head end.

By adopting the inventive method, through facts have proved, every ESR ingot can be saved the material of a pincers handle.ESR ingot diameter commonly used is generally φ 1050 and φ 1300 on 6000 tons of hydraulic presses, saves pincers 1.5～2.5 tons for every.

The inventive method places the rising head end of ESR ingot on the jumping-up drain cap, then carry out jumping-up, so that form the cydariform convex surface behind the rising head end jumping-up of ESR ingot, then pull out, this moment is because the rising head end is the cydariform convex surface, in the pulling process, be difficult for recessed contracting, the last excision fraction rising head end that only needs gets final product, and the method has been saved the step of original hydraulic press pressing tongs handle simultaneously, and is time saving and energy saving, economical with materials has improved forging utilization rate and enterprise's production cost greatly.

Above description is explanation of the invention, is not that limited range of the present invention is referring to claim, in the situation that without prejudice to basic structure of the present invention, the present invention can do any type of modification to the restriction of invention.

Claims (1)

1. the forging method of ESR ingot forging and pressing Step Shaft is characterized in that may further comprise the steps:

The first step: ESR ingot is placed on the jumping-up drain cap, and described ESR ingot rising head end is downward;

Second step: utilize hydraulic press to the ESR ingot jumping-up, form cydariform behind the described ESR ingot rising head end jumping-up;

The 3rd step: utilize manipulator that the described ESR ingot of step 2 is pulled out;

The 4th step: the rising head end that forms on the described ESR ingot of excision step 2.

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