PATENT CLAIM ANALYSIS

Application Number: 15756024
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-01
Patent Classification: ["164", "515000"]

Abstract:
The invention provides an electroslag fusion process for manufacturing a blade slab having a large curved surface, and it is more particularly effectively in making a blade slab which has a big width-to-thickness ratio, a large difference between the thin and the thick edges and a large curved surface. Firstly, dividing the blade slab into two or three regions according to the external shape and the sectional size of the blade slab, wherein the region which has difficulty in unilateral or bilateral mold-filling is pre-fabricated by the electroslag casting technology to produce a pre-fabricated curved slab, and then it is placed in advance in a side of an internal cavity of a mold, and then fusing the molten metal melted from a consumable electrode and one or two electroslag pre-fabricated slabs which are placed in advance in the mold by utilizing the electroslag fusion process, so as to produce the blade slab having a large curved surface. The large curved blade slab prepared by the process of the present invention has good internal and surface qualities, which can improve material utilization rate, shorten the processing period and improve quality, and in particular, has high anti-fatigue performance, high crack resistance and extensibility performances. The process of the present invention is more suitable for producing large or very large curved blade slab castings having a width-to-thickness ratio >10 and a single weight over 10 tons.

Claim (Index 1):
An electroslag fusion process for manufacturing a blade slab having a large curved surface, comprising the following steps:\n dividing the blade slab into two or three regions according to the external shape and the sectional size of the blade slab, wherein the region which has great sectional thickness changes and difficulty in unilateral or bilateral mold-filling is pre-fabricated in advance by an electroslag casting technology to produce a pre-fabricated curved slab; placing the pre-fabricated curved slab in advance at a side of an internal cavity of a mold; and fusing a molten metal melted from a consumable electrode and one or two electroslag pre-fabricated slabs which are placed in advance inside the mold together, so as to produce the blade slab having a large curved surface.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 88.0
- Lexical Diversity: 2.21239
- Patent Class: 164.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13571708', '10158382', '12450290', '12297984', '13148395']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7517137303973095
- 35 USC 102 Novelty (BERT): 0.4725799613471272
- Combined Prediction Score: 0.7238003534922912
- Mean Citation Score: 150.43802799999995
- Max Citation Score: 169.0786
- Similarity Product: 122.83995226677656

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test