Unlock instant, AI-driven research and patent intelligence for your innovation.
Method and welding material for rapid welding repair of large ZG20 cast steel defects
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A ZG20, welding material technology, applied in welding/cutting media/materials, welding media, welding equipment, etc., can solve the problems of coarse metal grains in the welding zone, poor fusion in the welding zone, and reduced performance in the welding zone, and achieve the fusion zone. Narrow, low melting, low welding temperature effect
Inactive Publication Date: 2013-12-04
XIAN UNIV OF TECH
View PDF4 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0006] The difficulty of welding and repairing defects in large steel castings lies in: poor fusion of welding areas caused by excessive heat conduction of castings, or cracking due to excessive thermal stress caused by large amount of deposited metal
Using electroslag welding to repair defects will easily cause coarse metal grains in the welding zone, resulting in a decrease in the performance of the welding zone
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0054] First, the welding consumables for the welding repair of large ZG35CrMo steel castings are prepared, which are composed of powders of the following components mixed uniformly by weight percentage:
[0056] Then, using the above-mentioned prepared welding materials, implement according to the following steps:
[0057] Step 1. Grinding the defective part of the defective casting 1 to process the bevel 8;
[0058] Step 2. Shape around the upper edge of the groove 8. Use molding sand or cement to build the embankment 2 along the upper periphery of the defect groove 8, and leave the introduction groove of the ignition fuze 5 on the upper edge of the embankment 2;
[0059] Step 3, filling the welding material: filling the prepared welding material 4 into ...
Embodiment 2
[0067] First, the welding consumables for the welding of large ZG35CrMo steel castings are prepared, which are composed of powders of the following components mixed uniformly by weight percentage:
[0069] Then, adopt the step of embodiment 1, implement welding repair.
Embodiment 3
[0071] First, the welding consumables for the welding repair of large ZG35CrMo steel castings are prepared, which are composed of powders of the following components mixed uniformly by weight percentage:
[0073] Then, adopt the step of embodiment 1, implement welding repair.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention discloses a welding material for rapid welding repair of large ZG20 cast steel defects. In weight percent, components of the welding material include 35%-38% of iron trioxide, 20%-25% of aluminum, 1.4%-1.6% of sodiumcarbonate, 5%-7% of borax, 8%-10% of fluorite, 10%-12% of calciumoxide, 6.5%-7.5% of silicon dioxide and 3.5%-5% of manganeseoxide, and the overall weight of the welding material is 100%. The invention further discloses a method for rapid welding repair of the large ZG20 cast steel defects, the welding material is in exothermic reaction by being filled into a groove or a dam, and a portion of metal in a welding zone higher than a casting surface is removed after rapid cooling. Cast steel repaired by the method is fine and compact in texture, and seam components, the texture, the performance and the color of the cast steel are consistent with those of a casting body.
Description
[0001] Original application number: 201010204149.3 [0002] Date of original filing: June 21, 2010 [0003] Original title of invention: "Welding material and repair method for repairing defects of large steel castings by rapid welding" technical field [0004] The invention belongs to the technical field of casting welding repair, and relates to a method for quickly welding and repairing defects of large ZG20 steel castings, and also relates to a welding material for quickly welding and repairing defects of large ZG20 steel castings. Background technique [0005] Casting is the first process of material forming. Due to the complexity of the casting production process, it is inevitable to cause various casting defects. The scrapping of castings caused by defects not only brings direct economic losses to the production enterprises, but also brings pressure to the society and harms the environment after the subsequent processing of the scrap parts. In particular, the dismemb...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More