Machining method of anti-abrasion carburizing lifting chain
A processing method and anti-wear technology, which is applied in the direction of manufacturing tools, metal material coating technology, furnaces, etc., can solve the problems of easy wear and tear of the chain, and achieve the effect of improving load performance and hardness
Pending Publication Date: 2022-07-29
杭州双元链条有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The purpose of the present invention is to solve the shortcoming of the chain in the prior art that the chain is easy to wear, and propose a processing method for an anti-wear carburized lifting chain
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0033] see Figure 1-8 As shown in the figure, a processing method of an anti-wear carburizing hoisting chain is characterized in that, the processing method is:
[0034] Quenching: First place the chain in the quenching furnace through a crane, put the chain into the quenching porcelain tube 35 in the quenching furnace body 3, and the heat generated by the magnetic lines of force generated by the chain cutting the electrified copper tube makes the chain heat up; The speed first enters the quenched porcelain tube 35, and the quenched porcelain tube is provided with a first hollow cylinder 34 wound by a copper tube. Since the quenching coil is long enough and the current of the quenching coil is large enough, the temperature of the entire chain ring can be uniform when the chain is out of the coil, and the quenching temperature of 20Mn2 material can reach 870℃;
[0035] Oxygen barrier gas protection: Methanol is used as a protective agent. After the chain is placed in the quench...
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 relates to a machining method of a carburized lifting chain, in particular to a machining method of an anti-abrasion carburized lifting chain. The method comprises the following steps: firstly, placing a chain in a quenching furnace through a crane, putting the chain into a quenching porcelain tube, adopting methanol as a protective agent, putting the chain into a quenching furnace body, covering a quenching furnace cover, fastening, electrifying and heating, dripping methanol into a quenching furnace chamber from a first methanol dripping tube, and simultaneously dripping methanol into the quenching furnace chamber; a chain is lifted out of a quenching furnace through a crane and put into a tempering furnace, then a tempering porcelain tube in the tempering furnace is put, a section of the tempering porcelain tube is reserved and laid on a workbench, the chain is connected to a traction assembly, and the traction assembly drags the chain out and cools the chain through a cooling assembly. The problems that in the prior art, a chain is prone to abrasion, poor in comprehensive mechanical performance and the like are solved, the hardness, abrasion resistance and tensile strength of the exterior of the chain are improved through heat treatment, toughness of the interior of the chain after quenching is kept, and certain load performance is improved.
Description
technical field [0001] The invention relates to a processing method of a carburizing hoisting chain, and more particularly, to a processing method of an anti-wear carburizing hoisting chain. Background technique [0002] Since the 1970s, my country began to produce 80-level hoisting chains after importing the chain production equipment produced by the German Warfields company at a high price. However, due to the large plastic deformation of the chain in the production process, and the chain is mainly subjected to tensile stress, the carbon content of the chain material cannot be very high. In China, 20Mn2 materials are generally used for the production of 80-level chains. Since its carbon content is only about 0.2%, the hardness after quenching and tempering will not be very high. Generally, the hardness of the straight handle is only HRC35-40, and the hardness of the circular arc is controlled at HRC42-46. Such a chain has high tensile strength and comprehensive mechanica...
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
Login to View More IPC IPC(8): C23C8/22C23C8/80C21D1/18C21D9/00C21D1/76
CPCC23C8/22C23C8/80C21D1/18C21D9/0087C21D1/76
Inventor 谢水虎谢晓锋
Owner 杭州双元链条有限公司