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保定市東昊鍛造有限公司

聯系人:黃經理

電話:0312-2200737

手機:13582266002

地址:保定市蓮池區朱莊工業區

行業新聞
模鍛件質量檢驗的主要方法
1.化學成分檢查
1. chemical composition examination
一般鍛件不進行化學成分檢查,化學成分是以冶煉時爐前取樣分析為準。但是對重要的或可疑的鍛件,可從鍛件上切下一些切屑,采用化學分析或光譜分析方法檢驗化學成分。
General forgings do not carry out chemical composition inspection. Chemical composition is based on www.yesanpo.org.cnwww.hupomoju.net.cnwww.pudutongdiao.comwww.jianchajingg.cn www.huafenchimoju.net.cnwww.gangsi.org.cnsampling analysis before smelting. But for important or suspicious forgings, some chips can be cut from the forgings, and chemical composition can be checked by chemical analysis or spectroscopic analysis.
2.尺寸和形狀檢查
2. size and shape check
(1)外觀目測檢查這是工序間檢驗常用的方法,憑肉眼觀察鍛件表面是否有折疊、裂紋、壓傷、斑疤、表面過燒等缺陷。鍛件表面隱蔽較深的缺陷,常在熱處理并清理后進行觀察。
(1) the visual inspection of the appearance is a common method of inspection between the processes. By observing the defects of the surface of the forgings, there are folds, cracks, bruising, scars, and surface burning. Defects hidden on the surface of the forgings are often observed after heat treatment and cleaning.
(2)尺寸測量檢查包括:長、寬、高尺寸;平面的平行度、垂直度;軸線的彎曲度;內外圓的橢圓度;圓角半徑;同心度;夾角和錯移量等。鍛件尺寸的檢驗是經常性的,測量用的工具分為通用性的和專用的。通用測量工具有卡尺、卡鉗、游標卡尺等。生產量大時應該使用專用工具,如卡規、塞規、樣板、專門夾具等。鍛件要求進行精確尺寸檢驗時,除了可以用劃線檢查和專門樣板外,可以采用由計算機進行控制和分析處理的檢驗儀器,或采用光學比較儀、光學投影儀作有關尺寸檢查。
(2) size measurement includes: long, wide and high dimensions; parallelism and perpendicularity of the plane; the curvature of the axis; the ellipticity of the inner and outer circles; the radius of the circle; the concentricity; the angle and the error displacement. The inspection of forging size is regular. The tools used for measurement are divided into general-purpose and special ones. The general measuring tools are calipers, calipers, vernier calipers and so on. Special tools, such as calipers, plug gauges, templates, special fixtures, should be used when production is large. When the precision size test is required for the forgings, the inspection instruments that are controlled and analyzed by the computer, or the optical comparator and the optical projector can be used to check the size.
(3)模具結構檢查 為了保證模鍛件的尺寸和形狀,還應該檢驗模具結構。新鍛模(或翻新后)的終鍛模膛和預鍛模膛,投入生產使用前,應該澆注鉛樣,或者澆注2份硝酸鈉和1份硝酸鉀組成的混合金屬鹽鑄件,檢查樣件形狀、飛邊狀態等,據此判斷模膛設計是否合理。酸洗后的第一批鍛件,要檢查充滿情況和是否存在折疊,以便確定鍛模圓角、凸緣、筋部等設計的正確性。此外,也應該檢查精密鍛件的切邊質量,以便確定切邊模設計或安裝上存在的質量問題。
(3) die structure inspection should also check the die structure in order to ensure the size and shape of the die forging. Before the new forging die (or refurbished) the final die bore and the pre forging die bore, before the production is put into production, the lead sample should be cast, or the mixed metal salt castings of 2 parts of sodium nitrate and 1 parts of potassium nitrate are cast, and the shape of the sample and the state of the flying are checked, and the design of the mold chamber is judged reasonable. After the pickling, the first batch of forgings should be checked for filling and folding, so as to ascertain the correctness of the design of forging die rounded, flange, rib and so on. In addition, the trimming quality of precision forgings should be checked in order to determine the quality problems existing in the design and installation of trimming dies.
3.力學性能檢驗
3. mechanical properties test
根據鍛件的重要性及材料特性來確定檢驗項目。力學性能試樣必須從同一熔煉爐,同一熱處理爐中取出的鍛件上切取。試樣切取、試樣形狀尺寸、檢驗方法均按國家標準規定進行。
The inspection items are determined according to the importance and material properties of the forgings. The mechanical properties of the specimens must be cut from the forgings taken from the same smelting furnace and the same heat treatment furnace. Sample cutting, sample size and testing methods are carried out in accordance with national standards.
(1)硬度試驗硬度試驗是生產中常用的、判斷鍛件力學性能最簡便的方法。硬度試驗的目的是:保證鍛件機械加工時有正常的切削性能;判斷鍛件表面的脫碳情況;了解鍛件內部組織的不均勻程度。硬度試驗一般在鍛件熱處理后進行,可使用布氏硬度或洛氏硬度計等。
(1) hardness test is the easiest way to judge the mechanical properties of forgings in production. The purpose of the hardness test is to ensure the normal cutting performance of the forging parts, to judge the decarbonization of the forgings, and to understand the inhomogeneous degree of the internal structure of the forgings. Hardness test is usually carried out after forging heat treatment. Brinell hardness or Rockwell hardness tester can be used.
(2)拉伸試驗測定在單向靜拉力下的屈服極限仃。、強度極限crb、延伸率艿及截面收縮率等。
(2) tensile test is used to determine yield limit under uniaxial tension. The ultimate strength is CRB, elongation and shrinkage.
(3)沖擊試驗用來檢驗材料或鍛件的韌性。工作時受沖擊載荷與振動載荷,或在高溫、高速下工作的零件,如渦輪盤、渦輪葉片等,一般需要進行沖擊試驗。
(3) impact test is used to check the toughness of materials or forgings. Shock tests are usually required for working parts, such as shock loads and vibration loads, or parts operating at high temperatures and high speeds, such as turbine discs and turbine blades.
  1. 聯系人:黃經理
  2. 電話:0312-2200737
  3. 手機:13582266002
  4. 網址:www.vdln.icu
  5. 地址:保定市蓮池區朱莊工業區

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