CN102615213A - Machining process for multifunctional folding tool shovel blade - Google Patents

Abstract

The invention relates to a metal machining process, in particular to a machining process for a multifunctional folding tool shovel blade, which solves the problem of high probability of damage in use of the conventional multifunctional folding tool shovel. The used steel contains the following elements in percentage content: 0.5-1.0 percent of C, 1.5-3.0 percent of Mn, 2.2-2.5 percent of Mo, 0.05-0.08 percent of V, 0.02-0.05 percent of Nb, 12.6-18.5 percent of Cr, 4-6 percent of Ce, 1.1-3 percent of Sr, 4-7 percent of Ni, less than or equal to 0.2 percent of Si, less than or equal to 0.025 percent of P and less than or equal to 0.015 percent of S. The machining process comprises the following steps of: (1) heating a blank plate by a heating furnace and performing compression molding on the blank by using a hydraulic press mould; (2) heating the blank by the heating furnace, and performing edge pressing and thickening treatment; (3) quenching; (4) heating the finished blank to 800-850 DEG C and preserving heat for 40-50 minutes, and reheating to 1,100-1,150 DEG C and preserving heat for 10-15 minutes; and (5) finally cooling in a nitrogen environment. For performance detection, five points are randomly taken on the blade part and close to the blade part; the detected hardness (HRC) is 58-61 HRC; and the multifunctional folding tool shovel blade is suitable for being used in outdoor work.

Description

Foldable multifunctional instrument spade blade processing technology

Technical field

The present invention relates to a kind of metal working process, be specially a kind of Foldable multifunctional instrument spade blade processing technology.

Background technology

Number of patent application is that 200920170806X discloses a kind of Foldable multifunctional instrument spade, and this product function is many, is fit to very much the outdoor construction personnel and uses.Especially the chopper part can hack at the branch, cutting; Purposes is very extensive, and the processing method of the chopper of this instrument spade part is simply the blade place to be polished into wedge shape with instrument at present, and this blade does not have hardness; Often use the very short time in the open air, the situation of turned or breach just occurs.

Summary of the invention

The present invention uses the problem of damaging easily in order to solve existing Foldable multifunctional instrument spade, and a kind of Foldable multifunctional instrument spade blade processing technology is provided.

The present invention is realized by following technical scheme, a kind of Foldable multifunctional instrument spade blade processing technology, and the percentage composition scope of element is following in the steel of use,

C0.5～1.0?Mn1.5～3.0、Mo2.2～2.5、V0.05～0.08、Nb0.02～0.05、Cr12.6～18.5，Ce?4～6，Sr1.1～3，Ni4-7；Si≤0.2、P≤0.025、S≤0.015；

Processing technology; (1), blank plate is heated to 1000～1080 ℃, be incubated 100 minutes, come out of the stove, adopt the hydraulic press mould blank compression moulding by charger by heating furnace;

(2), by heating furnace with blank heating to 1150 ℃, be incubated 30 minutes, Yi Bian the back of coming out of the stove adopts the pressure roller group to thicken processing to wherein carrying out flanging;

(3), quench;

(4), with finished product blank heating to 800～850 ℃, be incubated 40～50 minutes, be heated to 1100-1150 ℃ of insulation 10-15 minute again;

(5) last nitrogen environment cooling down.

Performance Detection, the blade position and near get 5 points at random, detecting hardness (HRC) be between the 58-61 HRC, meets the field work use.

Impact test: use weight 3kg, floor space 100mm ², shock height 1m, free-falling, picked at random 50 is carried out impact test to the instrument spade tow sides of processing, and phenomenon of rupture do not occur, and is qualified.

Function test;

1, optional 50, after every handle was brandished pine rod that strength cuts diameter 100mm continuously 10 times with the adult, cutting edge is wiredrawn edge for collapsing to lack, and was qualified

2, cut the 10mm iron wire, be placed on the deal board, use same spade connect break apart by chopping iron wire ten times after cutting edge intact, wiredrawn edge does not burst apart; Qualified.

The instrument spade edge structure that technology according to the invention is processed is protuberance thickening shape, and intensity and hardness are greatly improved, and can adapt to the abominable environment for use in field, uses indeformablely for a long time, does not damage.

Description of drawings

Among the figure: 1-top roll, 2-lower roll, 3-instrument spade blank.

The specific embodiment

Embodiment 1, a kind of Foldable multifunctional instrument spade blade processing technology, and the percentage composition scope of element is following in the steel of use,

C1.0?Mn1.5、Mo2.5、V0.05、Nb0.05、Cr12.6，Ce?6，Sr：1.1，Ni7；Si≤0.2、P≤0.025、S≤0.015；

Processing technology; (1), blank plate is heated to 1000 ℃, be incubated 100 minutes, come out of the stove, adopt the hydraulic press mould blank compression moulding by charger by heating furnace;

(2), by heating furnace with blank heating to 1150 ℃, be incubated 30 minutes, meaning as shown in Figure 1 is Yi Bian the back of coming out of the stove adopts the pressure roller group to thicken processing to wherein carrying out flanging;

(3), quench;

(4), with finished product blank heating to 850 ℃, be incubated 40～50 minutes, be heated to 1100 ℃ of insulations 15 minutes again;

(5) last nitrogen environment cooling down.

Performance Detection, the blade position and near get 5 points at random, detecting hardness (HRC) is 58,58,60,59,60 HRC, impact test is qualified, the impact cutting pass the test.

Embodiment 2, a kind of Foldable multifunctional instrument spade blade processing technology, and the percentage composition scope of element is following in the steel of use,

C0.5、Mn3.0、Mo2.2、V0.08、Nb0.02、Cr18.5，Ce?4，Sr：3，Ni4；Si≤0.2、P≤0.025、S≤0.015；

Processing technology; (1), blank plate is heated to 1080 ℃, be incubated 100 minutes, come out of the stove, adopt the hydraulic press mould blank compression moulding by charger by heating furnace;

(2), by heating furnace with blank heating to 1150 ℃, be incubated 30 minutes, Yi Bian the back of coming out of the stove adopts the pressure roller group to thicken processing to wherein carrying out flanging;

(3), quench;

(4), with finished product blank heating to 800 ℃, be incubated 50 minutes, be heated to 1100 ℃ of insulations 15 minutes again;

(5) last nitrogen environment cooling down.

Performance Detection, the blade position and near get 5 points at random, detecting hardness (HRC) is 58,58,60,50,61 HRC, impact test is qualified, the impact cutting pass the test.

Claims (1)

1. Foldable multifunctional instrument spade blade processing technology, the percentage composition scope of element is following in the steel that it is characterized in that using,

C0.5～1.0?Mn1.5～3.0、Mo2.2～2.5、V0.05～0.08、Nb0.02～0.05、Cr12.6～18.5，Ce?4～6，Sr1.1～3，Ni4-7；Si≤0.2、P≤0.025、S≤0.015；

Processing technology; (1), blank plate is heated to 1000～1080 ℃, be incubated 100 minutes, come out of the stove, adopt the hydraulic press mould blank compression moulding by charger by heating furnace;

(2), by heating furnace with blank heating to 1150 ℃, be incubated 30 minutes, Yi Bian the back of coming out of the stove adopts the pressure roller group to thicken processing to wherein carrying out flanging;

(3), quench;

(4), with finished product blank heating to 800～850 ℃, be incubated 40～50 minutes, be heated to 1100-1150 ℃ of insulation 10-15 minute again;

(5) last nitrogen environment cooling down.

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