CN216655787U

CN216655787U - Multipurpose alloy semi-steel shaped steel finished product roll for frame

Info

Publication number: CN216655787U
Application number: CN202123197986.0U
Authority: CN
Inventors: 许峰; 许阿平; 蒋志芳
Original assignee: Jiangsu Junsheng Roll Co ltd
Current assignee: Jiangsu Junsheng Roll Co ltd
Priority date: 2021-12-18
Filing date: 2021-12-18
Publication date: 2022-06-03
Anticipated expiration: 2031-12-18

Abstract

The utility model relates to the technical field of rollers, in particular to a multipurpose roller for a semi-steel alloy finished product rack, which is provided with an upper roller and a lower roller which are arranged in parallel up and down, wherein two ends of the upper roller and two ends of the lower roller are fixedly connected with bearing blocks, and one end of each bearing block is fixedly connected with a transmission end; the upper roller is provided with an equal-angle steel hole and an unequal-angle steel hole along the length direction; the unequal angle steel holes are arranged on one sides of the equal-angle steel holes; equal-side angle steel bulges and unequal-side angle steel bulges are arranged at opposite positions on the lower roller; the equilateral angle steel bulge is arranged opposite to the equilateral angle steel hole; the unequal angle steel bulge is arranged opposite to the unequal angle steel hole. The multipurpose alloy semi-steel section finished product rack roller has excellent design performance, can be widely used for rolling angle steel, channel steel, I-steel, T-shaped steel and flat bulb steel finished product racks, generally improves the rolling quantity by more than three times compared with the traditional roller, and obtains better rolling benefit and social benefit.

Description

Multipurpose alloy semi-steel shaped steel finished product roll for frame

Technical Field

The utility model relates to the technical field of rollers, in particular to a multipurpose alloy semi-steel section steel finished product roller for a rack.

Background

In recent years, the production of section steel in China develops rapidly, and the large-scale production of various section steels is nearly hundred million tons. In the production process of various section steels, the size, shape, precision and performance of the section steel products are always the key points for control in the production process of the section steels; particularly, in the case of a complex section steel product, the influence factors involved in the control of the product dimension are many, such as rolling force, width, and difference in the elongation coefficient of the leg portion and waist portion of the steel section. The existence of the factors has a certain relationship with the design of the same type steel rolling process and has a close indispensable relationship with the comprehensive performance of a main deformation tool roller for rolling the section steel. At present, the rolling mill rolls various section steels with more roller materials, and the rolling mill can completely meet the requirements of rolling various section steels with less roller materials due to the limitation of rolling conditions and environment. The main factors of the rolling of the section steel are the variety, the specification, the market demand and the like of the section steel. With the technological innovation of steel products in China, new high-performance, high-rigidity, high-toughness, weather-resistant and corrosion-resistant section steel products are developed, an innovative way is provided, new materials of rollers suitable for rolling various multipurpose section steel fine products are continuously researched and developed towards technological efficiency, and new requirements of section steel rolling are met.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: in order to solve the problems in the prior art, the multipurpose alloy semi-steel section finished product rack roller is provided, has excellent design performance, can be widely used for rolling angle steel, channel steel, I-shaped steel, T-shaped steel and flat bulb steel finished product racks, generally improves the rolling quantity by more than three times compared with the traditional roller, and obtains better rolling benefit and social benefit.

The technical scheme adopted by the utility model for solving the technical problem is as follows: a multipurpose roller for a finished alloy semi-steel section rack is provided with an upper roller and a lower roller which are arranged in parallel up and down, wherein both ends of the upper roller and both ends of the lower roller are fixedly connected with bearing blocks, and one end of each bearing block is fixedly connected with a transmission end; the upper roller is provided with an equal-angle steel hole and an unequal-angle steel hole along the length direction; the unequal angle steel holes are arranged on one sides of the equal-angle steel holes; equal-side angle steel bulges and unequal-side angle steel bulges are arranged at opposite positions on the lower roller; the equilateral angle steel bulge is arranged opposite to the equilateral angle steel hole; the unequal angle steel bulges are arranged opposite to the unequal angle steel holes.

Further, in the technical scheme, the equilateral angle steel bulge and the lower roller are of an integrated structure; such a design may improve the strength of the overall lower roll.

Further, in the technical scheme, the joints of the two ends of the upper roller and the bearing retainer are provided with first round corners; this allows for an efficient transition at the junction.

In the technical scheme, the joint of the two ends of the lower roller and the bearing stop is provided with a second fillet; this allows for an effective transition at its junction.

In the technical scheme, a third fillet is arranged at the joint of the upper roller upper bearing rail and the transmission end; this allows for an efficient transition at the junction.

In the technical scheme, a fourth fillet is arranged at the joint of the bearing stop on the lower roller and the transmission end; this allows for an efficient transition at the junction.

The utility model has the beneficial effects that: the multipurpose roller for the alloy semi-steel section finished product rack provided by the utility model has excellent design performance, can be widely used for rolling angle steel, channel steel, I-steel, T-shaped steel and flat bulb steel finished product racks, generally improves the rolling quantity by more than three times compared with the traditional roller, and obtains better rolling benefit and social benefit.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

The reference numbers in the drawings are: 1. go up roller, 2, lower roll, 3, bearing shelves, 4, transmission end, 5, equilateral angle steel hole, 6, the equilateral angle steel hole, 7, the equilateral angle steel arch, 8, the equilateral angle steel arch, 9, first fillet, 10, second fillet, 11, third fillet, 12, fourth fillet.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

FIG. 1 shows a multipurpose roller for a finished alloy semi-steel section rack, which is provided with an upper roller 1 and a lower roller 2 which are arranged in parallel up and down, wherein both ends of the upper roller 1 and both ends of the lower roller 2 are fixedly connected with a bearing retainer 3, and one end of the bearing retainer 3 is fixedly connected with a transmission end 4; the upper roller 1 is provided with an equal-angle steel hole 5 and an unequal-angle steel hole 6 along the length direction; the unequal-angle steel holes 6 are arranged on one sides of the equal-angle steel holes 5; an equilateral angle steel bulge 7 and an equilateral angle steel bulge 8 are arranged at opposite positions on the lower roller 2; the equilateral angle steel bulge 7 is arranged opposite to the equilateral angle steel hole 5; the unequal angle steel bulge 7 is arranged opposite to the unequal angle steel hole 6.

Wherein, equilateral angle steel bulge 7, inequilateral angle steel bulge 8 and lower roll 2 are an organic whole structure. The joints of the two ends of the upper roller 1 and the bearing retainer 3 are provided with first round corners 9. The joints of the two ends of the lower roller 2 and the bearing retainer 3 are provided with second round corners 10. And a third fillet 11 is arranged at the joint of the bearing retainer 3 and the transmission end 4 on the upper roller 1. The joint of the bearing rail 3 and the transmission end 4 on the lower roller 2 is provided with a fourth fillet 12.

In the present application, the upper and lower rolls 1 and 2 are produced as follows: optimally configuring chemical components: c: 1.50 to 2.0 percent of Si, 0.30 to 0.80 percent of Mn, 1.2 to 1.80 percent of Mn, less than or equal to 0.03 percent of P, less than or equal to 0.025 percent of S, 1.30 to 2.50 percent of Cr, 1.00 to 2.00 percent of Ni, 0.20 to 0.60 percent of Mo, and more than or equal to 0.01 percent of Re; spheroidizing and inoculating treatment: carrying out steel tapping spheroidization treatment when the temperature of the steel reaches the liquid phase temperature and is plus 120-160 ℃, adding 8-10 kg/ton steel by adopting a rare earth magnesium alloy as a spheroidizing agent, adding 0.30-0.60% of SiCa alloy as an inoculant, then calming for 5-8 min, and casting when the temperature of the steel reaches the liquid phase temperature and is plus 60-80 ℃ to obtain reasonable and uniform spheroidized graphite, wherein the unit detection quantity of the graphite with the sphere diameter of 3-5 mu m is more than 50; special heat treatment: and (2) opening a hot box for diffusion annealing at 550-650 ℃, preserving heat for 15-20 hours until 830-940 ℃, then air-cooling to 430 ℃ for normalizing, raising the temperature at the speed of 10 ℃/hour, preserving heat for 8-10 hours until 660-680 ℃, raising the temperature at the speed of 12 ℃/hour, preserving heat for 25 mm/hour when the temperature of the roller reaches 920 ℃, then carrying out spray quenching on water mist, tempering when the temperature of the roller reaches 450 ℃, raising the temperature at the speed of 10 ℃, raising the temperature of the roller to 530-550 ℃, preserving heat for 5-10 hours, and then carrying out furnace cooling.

In the application, the hardness of the roll surfaces of the upper roll 1 and the lower roll 2 is 63-68 HSD, and the difference between the hardness of the roll surfaces and the hardness of the bottom of a hole pattern is less than or equal to 1.5 HSD; the tensile strength of the roller is more than or equal to 630 MPa; the roller has a metallographic basic structure as follows: graphite, fine grained carbides, tempered troostite and bainite.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.

Claims

1. The utility model provides a multipurpose alloy semi-steel shaped steel finished product roll for frame which characterized in that: the device is provided with an upper roller and a lower roller which are arranged in parallel up and down, wherein both ends of the upper roller and both ends of the lower roller are fixedly connected with bearing blocks, and one end of each bearing block is fixedly connected with a transmission end; the upper roller is provided with an equal-angle steel hole and an unequal-angle steel hole along the length direction; the unequal angle steel holes are arranged on one sides of the equal-angle steel holes; equal-side angle steel bulges and unequal-side angle steel bulges are arranged at opposite positions on the lower roller; the equilateral angle steel bulge is arranged opposite to the equilateral angle steel hole; the unequal angle steel bulges are arranged opposite to the unequal angle steel holes.

2. The roller for the multipurpose alloy semi-steel section finished product rack as claimed in claim 1, wherein: the equilateral angle steel bulge, the equilateral angle steel bulge and the lower roller are of an integrated structure.

3. The roller for the multipurpose alloy semi-steel section finished product rack as claimed in claim 1, wherein: and the joints of the two ends of the upper roller and the bearing retainer are provided with first round corners.

4. The roller for the multipurpose alloy semi-steel section finished product rack as claimed in claim 1, wherein: and second round corners are arranged at the joints of the two ends of the lower roller and the bearing retainer.

5. The roller for the multipurpose alloy semi-steel section finished product rack as claimed in claim 1, wherein: and a third fillet is arranged at the joint of the upper roller upper bearing retainer and the transmission end.

6. The roller for the multipurpose alloy semi-steel section finished product rack as claimed in claim 1, wherein: and a fourth fillet is arranged at the joint of the bearing stop on the lower roller and the transmission end.